Chemical plant safety valve pressure detection device

Abstract

The utility model discloses a chemical plant safety valve pressure detection device, which belongs to the technical field of safety valve detection devices and comprises a detection box and a fixing mechanism, a telescopic cylinder is fixedly mounted at the top of the detection box, the output end of the telescopic cylinder is fixedly connected with a moving plate, and the bottom of the moving plate is fixedly connected with a limiting cover. A first sealing gasket is fixedly arranged at the top end of the inner side of the limiting cover, an air guide pipe penetrates through the surface of the first sealing gasket, a pressure gauge is installed at the top of the air guide pipe, placing grooves are formed in the bottom end of the inner side of the detection box at equal intervals, and second sealing gaskets are fixedly arranged at the bottom ends of the interiors of the placing grooves. According to the utility model, through the structural design of the rotating plate, the placing groove, the safety valve bodies and the fixing mechanism, a plurality of safety valve bodies can be conveniently fixed at the same time, and through the mutual cooperation of the worm gear and the worm, the self-locking effect can be realized, so that the safety valve can be effectively prevented from deviating during detection, and the detection accuracy is improved. And the safety valve detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valve detection devices, in particular to a safety valve pressure detection device for a chemical plant. Background Art

[0002] A safety valve is a special valve that is normally closed under the action of external force. When the medium pressure in the equipment or pipeline exceeds the specified value, it prevents the medium pressure in the pipeline or equipment from exceeding the specified value by discharging the medium outside the system. The safety valve belongs to the automatic valve category and is mainly used in boilers, pressure vessels and pipelines to control the pressure not to exceed the specified value. It plays an important protective role in personal safety and equipment operation. The safety valve must undergo a pressure test before use. The safety valve plays a safety protection role in the system. When the system pressure exceeds the specified value, the safety valve opens to discharge part of the gas and fluid in the system into the atmosphere outside the pipeline, so that the system pressure does not exceed the allowable value, thereby ensuring that the system does not cause accidents due to excessive pressure.

[0003] After searching, a Chinese patent with patent announcement number CN213041484U discloses a pressure detection device for a safety valve in a chemical plant, which relates to the technical field of safety valves. The clamping component of the pressure detection device for the safety valve in a chemical plant includes a fixed plate and a first spring, wherein the fixed plate is arranged on the outside of the safety valve, the fixed plate is fixedly connected to the top of the air outlet pipe, a connecting block is fixedly connected to the top of the fixed plate, the number of the connecting blocks is set to be multiple, and one side of the multiple connecting blocks is fixedly connected to the first spring. The pressure detection device for the safety valve in a chemical plant has a sealing gasket fixedly connected to the bottom end of the push rod to block the air outlet end of the safety valve, and at the same time, the safety valve is pushed downward to insert the other end of the safety valve into the inside of the air outlet pipe, and at the same time, a sealing ring is fixedly connected inside the air outlet pipe to communicate the safety valve with the air outlet pipe, and at the same time, the connection is sealed, which is conducive to automatic fixation during fixation, forming a sealing space required for detection, and greatly improving the efficiency of detection.

[0004] However, the above design still has some shortcomings. In the above design, the safety valve is fixed by a spring. However, during detection, the safety valve may be offset due to the elasticity of the spring, which may lead to low sealing and reduce the accuracy of safety valve detection. Utility Model Content

[0005] The utility model aims to provide a pressure detection device for a safety valve in a chemical plant to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure detection device for a safety valve in a chemical plant, comprising a detection box and a fixing mechanism, a telescopic cylinder is fixedly installed on the top of the detection box, a movable plate is fixedly connected to the output end of the telescopic cylinder, a limit cover is fixedly connected to the bottom of the movable plate, a first sealing gasket is fixedly arranged on the inner top end of the limit cover, an air guide pipe is penetrated on the surface of the first sealing gasket, a pressure gauge is installed on the top of the air guide pipe, placement grooves are equidistantly arranged on the inner bottom end of the detection box, a second sealing gasket is fixedly arranged on the inner bottom end of the placement groove, a safety valve body is arranged on the top of the second sealing gasket, a fixing mechanism is arranged on one side of the safety valve body, an installation cavity is opened at the bottom of the placement groove, a pressure pump is fixedly installed inside the installation cavity, an air delivery pipe is fixedly connected to the output end of the pressure pump, and the upper end of the air delivery pipe penetrates the second sealing gasket and is connected to the inside of the placement groove, an air intake pipe is fixedly connected to the input end of the pressure pump, a filter is fixedly arranged on the front end surface of the air intake pipe, and a rotating plate is rotatably arranged on the front end surface of the detection box.

[0007] As a further solution of the utility model: the fixing mechanism includes a worm, and the front end of the worm is fixedly connected to the rear end of the rotating plate, and the top of the worm is transmission-connected to a worm wheel.

[0008] As a further solution of the utility model: a rotating rod is fixedly connected inside the worm wheel, a bidirectional screw is fixedly connected to one side of the rotating rod, and a moving block is threadedly connected to the outer wall of the bidirectional screw.

[0009] As a further solution of the utility model: a cross bar is movably provided through the lower end surface of the moving block, and a transmission plate is fixedly connected to the top of the moving block.

[0010] As a further solution of the utility model: a transmission rod is fixedly connected to the other side of the transmission plate, and an arc-shaped fixing plate is fixedly connected to one side of the transmission rod.

[0011] As a further solution of the utility model: a box door is movably arranged above the rotating plate through a hinge, and a transparent window is fixedly arranged on the front end surface of the box door.

[0012] The utility model has the following beneficial effects:

[0013] (1) Through the structural design of the rotating plate, the placement groove, the safety valve body and the fixing mechanism, it is possible to facilitate the simultaneous fixing of multiple safety valve bodies, and through the mutual cooperation of the worm wheel and the worm, a self-locking effect can be achieved, thereby effectively avoiding the safety valve from being offset during detection, thereby improving the accuracy of safety valve detection, and solving the problem that the safety valve is fixed by a spring, but the safety valve may be offset during detection due to the elasticity of the spring, which may result in low sealing and reduce the accuracy of safety valve detection;

[0014] (2) By arranging a telescopic cylinder, a transparent window, an installation cavity, a filter, a movable plate, a limit cover, a first sealing gasket, a pressure gauge, an air guide pipe, a second sealing gasket, an air supply pipe, an air suction pipe and a pressure pump, and by arranging a plurality of placement slots, it is convenient to detect a plurality of safety valve bodies at the same time, thereby improving the detection efficiency. When it is necessary to detect the safety valve body, the movable plate can be driven downward by the output end of the telescopic cylinder, and the downward movement of the movable plate drives the limit cover to move downward until it contacts the top of the safety valve body, and the first sealing gasket and the second sealing gasket cooperate with each other to seal the two ends of the safety valve body. Then, a plurality of pressure pumps are started, and the output end of the pressure pump can be used to transmit air pressure through the air supply pipe. When the output air pressure of the pressure pump reaches the pressure specified by the safety valve body, the staff can read the value of the pressure gauge through the transparent window, thereby detecting whether the safety valve is at a normal pressure relief rating. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional partial schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the partial internal structure of the main view of the utility model;

[0017] Figure 3 It is a schematic diagram of the enlarged local structure of point A of the present invention.

[0018] In the figure: 1. detection box; 2. box door; 3. rotating plate; 4. telescopic cylinder; 5. transparent window; 6. installation cavity; 7. filter screen; 8. moving plate; 9. fixing mechanism; 901. transmission rod; 902. arc-shaped fixing plate; 903. worm gear; 904. rotating rod; 905. transmission plate; 906. bidirectional screw; 907. cross bar; 908. moving block; 909. worm; 10. limit cover; 11. first sealing gasket; 12. pressure gauge; 13. air guide pipe; 14. placement groove; 15. safety valve body; 16. second sealing gasket; 17. air supply pipe; 18. suction pipe; 19. pressure pump. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0022] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figure 1-3, the utility model provides an embodiment: a pressure detection device for a safety valve in a chemical plant, comprising a detection box 1 and a fixing mechanism 9, a telescopic cylinder 4 is fixedly installed on the top of the detection box 1, a movable plate 8 is fixedly connected to the output end of the telescopic cylinder 4, a limit cover 10 is fixedly connected to the bottom of the movable plate 8, a first sealing gasket 11 is fixedly arranged on the inner top of the limit cover 10, an air guide pipe 13 is penetrated on the surface of the first sealing gasket 11, a pressure gauge 12 is installed on the top of the air guide pipe 13, an installation cavity 6 is provided at the bottom of the placement groove 14, a pressure pump 19 is fixedly installed inside the installation cavity 6, an air delivery pipe 17 is fixedly connected to the output end of the pressure pump 19, and the upper end of the air delivery pipe 17 penetrates the second sealing gasket 16 and is connected to the inside of the placement groove 14, an air intake pipe 18 is fixedly connected to the input end of the pressure pump 19, a filter screen 7 is fixedly arranged on the front end surface of the air intake pipe 18, a box door 2 is movably arranged above the rotating plate 3 through a hinge, and a transparent window 5 is fixedly arranged on the front end surface of the box door 2;

[0025] Specifically, Figure 1 and Figure 2 As shown, when in use, by providing a plurality of placement slots 14, it is convenient to detect a plurality of safety valve bodies 15 at the same time, thereby improving the detection efficiency. When the safety valve body 15 needs to be detected, the movable plate 8 can be driven downward by the output end of the telescopic cylinder 4, and the movable plate 8 moves downward to drive the limit cover 10 to move downward until it contacts the top of the safety valve body 15, and the first sealing gasket 11 and the second sealing gasket 16 cooperate with each other to seal the two ends of the safety valve body 15, and then start a plurality of pressure pumps 19, and the output end of the pressure pump 19 can be used to transmit air pressure through the air pipe 17. When the output air pressure of the pressure pump 19 reaches the pressure specified by the safety valve body 15, the staff can read the value of the pressure gauge 12 through the transparent window 5, thereby detecting whether the safety valve body 15 is at a normal pressure relief rating.

[0026] The inner bottom end of the detection box 1 is equidistantly provided with placement grooves 14, the inner bottom end of the placement grooves 14 is fixedly provided with a second sealing gasket 16, the top of the second sealing gasket 16 is provided with a safety valve body 15, and one side of the safety valve body 15 is provided with a fixing mechanism 9, the fixing mechanism 9 includes a worm 909, and the front end of the worm 909 is fixedly connected to the rear end of the rotating plate 3, the top of the worm 909 is drivingly connected with a worm wheel 903, the inside of the worm wheel 903 is fixedly connected with a rotating rod 904, one side of the rotating rod 904 is fixedly connected with a bidirectional screw 906, the outer wall of the bidirectional screw 906 is threadedly connected with a moving block 908, the lower end surface of the moving block 908 is movably provided with a cross bar 907, the top of the moving block 908 is fixedly connected with a transmission plate 905, the other side of the transmission plate 905 is fixedly connected with a transmission rod 901, one side of the transmission rod 901 is fixedly connected with an arc-shaped fixed plate 902, and the front end surface of the detection box 1 is rotatably provided with a rotating plate 3;

[0027] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, when it is necessary to perform pressure detection on the safety valve body 15, the safety valve body 15 is first placed in the placement groove 14 one by one, and then the rotating plate 3 is rotated. The rotating plate 3 rotates to drive the worm 909 to rotate, and the worm 909 rotates through the worm gear 903 to drive the rotating rod 904 to rotate, and the rotating rod 904 rotates to drive the bidirectional screw 906 to rotate, and the bidirectional screw 906 rotates to drive the moving block 908 to move, and the moving block 908 moves to drive the transmission plate 905 to move, and the transmission plate 905 moves through the transmission rod 901 to drive the arc-shaped fixed plate 902 to approach the safety valve body 15. The entire valve body 15 moves in the direction until it contacts the safety valve body 15 and effectively fixes it. Through the cooperation of the worm gear 903 and the worm 909, a self-locking effect can be achieved, thereby effectively avoiding the safety valve from being offset during detection, thereby improving the accuracy of safety valve detection, and solving the problem of fixing the safety valve by a spring, but during detection, due to the elasticity of the spring, the safety valve may be offset, which may result in low sealing and reduce the accuracy of safety valve detection.

[0028] Working principle: In the present application, the box door 2 is opened first, and then the safety valve bodies 15 are placed one by one in the placement groove 14, and then the rotating plate 3 is rotated. The rotating plate 3 rotates to drive the worm 909 to rotate, and the worm 909 rotates through the worm wheel 903 to drive the rotating rod 904 to rotate, and the rotating rod 904 rotates to drive the bidirectional screw 906 to rotate, and the bidirectional screw 906 rotates to drive the moving block 908 to move, and the moving block 908 moves to drive the transmission plate 905 to move, and the transmission plate 905 moves through the transmission rod 901 to drive the arc-shaped fixed plate 902 to move in the direction close to the safety valve body 15 until it contacts the safety valve body 15 and effectively fixes it, and then The movable plate 8 can be driven downward by the output end of the telescopic cylinder 4, and the downward movement of the movable plate 8 drives the limit cover 10 to move downward until it contacts the top of the safety valve body 15, and the first sealing gasket 11 and the second sealing gasket 16 cooperate with each other to seal the two ends of the safety valve body 15, and then start multiple pressure pumps 19, and the output end of the pressure pump 19 can be used to transmit air pressure through the air pipe 17. When the output air pressure of the pressure pump 19 reaches the pressure specified by the safety valve body 15, the staff can read the value of the pressure gauge 12 through the transparent window 5, so as to detect whether the safety valve body 15 is at a normal pressure relief rating.

[0029] The standard parts used in this application document can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art. At the same time, the electrical components appearing in this application are all externally connected to the power supply and control switch when in use. The control method is automatically controlled by a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field, which is common knowledge in this field. Therefore, the present invention no longer explains the control method and circuit connection in detail, and the external controller mentioned in the specification can control the electrical components mentioned in this article, and the external controller is a conventional known device.

[0030] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0031] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above are only preferred implementation methods of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A safety valve pressure detection device for a chemical plant, comprising a detection box (1) and a fixing mechanism (9), characterized in that: A telescopic cylinder (4) is fixedly mounted on the top of the detection box (1), a movable plate (8) is fixedly connected to the output end of the telescopic cylinder (4), a limit cover (10) is fixedly connected to the bottom of the movable plate (8), a first sealing gasket (11) is fixedly mounted on the inner top end of the limit cover (10), an air guide tube (13) is penetrated through the surface of the first sealing gasket (11), a pressure gauge (12) is mounted on the top of the air guide tube (13), placement grooves (14) are equidistantly arranged on the inner bottom end of the detection box (1), a second sealing gasket (16) is fixedly mounted on the inner bottom end of the placement groove (14), and the top of the second sealing gasket (16) is fixedly mounted on the inner bottom end of the placement groove (14). A safety valve body (15) is provided, a fixing mechanism (9) is provided on one side of the safety valve body (15), a mounting cavity (6) is provided at the bottom of the placement groove (14), a pressure pump (19) is fixedly installed inside the mounting cavity (6), an output end of the pressure pump (19) is fixedly connected to an air supply pipe (17), and the upper end of the air supply pipe (17) passes through a second sealing gasket (16) and is connected to the inside of the placement groove (14), an input end of the pressure pump (19) is fixedly connected to an air intake pipe (18), a filter screen (7) is fixedly provided on the front end surface of the air intake pipe (18), and a rotating plate (3) is rotatably provided on the front end surface of the detection box (1).

2. A chemical plant safety valve pressure detection device according to claim 1, characterized in that: The fixing mechanism (9) comprises a worm (909), and the front end of the worm (909) is fixedly connected to the rear end of the rotating plate (3), and the top of the worm (909) is transmission-connected to a worm wheel (903).

3. A chemical plant safety valve pressure detection device according to claim 2, characterized in that: The interior of the worm wheel (903) is fixedly connected to a rotating rod (904), one side of the rotating rod (904) is fixedly connected to a bidirectional screw rod (906), and the outer wall of the bidirectional screw rod (906) is threadedly connected to a moving block (908).

4. A chemical plant safety valve pressure detection device according to claim 3, characterized in that: A cross bar (907) is movably provided through the lower end surface of the moving block (908), and a transmission plate (905) is fixedly connected to the top of the moving block (908).

5. A chemical plant safety valve pressure detection device according to claim 4, characterized in that: The other side of the transmission plate (905) is fixedly connected to a transmission rod (901), and one side of the transmission rod (901) is fixedly connected to an arc-shaped fixing plate (902).

6. A chemical plant safety valve pressure detection device according to claim 1, characterized in that: A box door (2) is movably arranged above the rotating plate (3) via a hinge, and a transparent window (5) is fixedly arranged on the front end surface of the box door (2).

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