Automatic pressure alarm for pressure vessel

Abstract

The utility model relates to the technical field of alarms, in particular to an automatic pressure alarm for a pressure container, which comprises a pressure-bearing pipe joint mounted at the top of a corresponding pipe orifice of the pressure container, a pressure-bearing pipe cavity in the pressure-bearing pipe joint is communicated with the inside of the pressure container, a pressure-bearing shifting mechanism is mounted in the pressure-bearing pipe cavity, and a pressure-bearing shifting mechanism is mounted in the pressure-bearing shifting mechanism. An upper plugging flange end cover is mounted in the pressure-bearing pipe cavity at the top of the pressure-bearing displacement mechanism, a controller and an audible and visual alarm are mounted on the two sides of the top of the upper plugging flange end cover respectively, and pressure triggers are mounted in mounting holes in the two sides of the upper plugging flange end cover respectively. According to the pressure alarm, the mode that the two pressure triggers are symmetrically installed in a matched mode is adopted, when any one pressure trigger is triggered, triggering of the audible and visual alarm can be achieved, audible and visual alarming is achieved, the reliability of triggering of the whole pressure alarm is effectively improved, and potential safety hazards caused by failure of a single trigger are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of alarm, especially a pressure automatic alarm for pressure vessel. BACKGROUND

[0002] Pressure vessels are commonly used for storing gases or liquids and withstand internal or external pressure, and potential safety risks exist in pressure vessels with pressure changes and possible abnormal conditions. Therefore, the safety of the alarm system is essential to ensure the safe operation of the pressure vessel.

[0003] At present, when the pressure vessel is installed, the electric control type alarm is generally used. For example, the patent literature with the patent authorization announcement number CN205138712U discloses a pressure alarm system for pressure vessel, which mainly includes a pressure gauge installed on the pressure vessel for measuring the pressure in the pressure vessel; an alarm connected with the pressure gauge for alarming when the pressure in the pressure vessel is greater than or equal to the maximum threshold or less than or equal to the minimum threshold; wherein the pressure gauge is an electric contact pressure gauge, including an upper limit pointer, a lower limit pointer and an actual pressure pointer, when the actual pressure pointer is connected with the upper limit pointer or the actual pressure pointer is connected with the lower limit pointer, the alarm is turned on.

[0004] It can be seen that the above-mentioned alarm realizes its connection or disconnection by relying on the pressure gauge, but this kind of test method relying on the pressure pointer has the following disadvantages: first, the pressure gauge may be affected by radiation heat, freezing or vibration during use, resulting in inaccurate and objective test results; second, in the use environment of specific medium (such as corrosive, high viscosity medium), dirt and oil stains are easy to enter and accumulate in the internal during long-term operation, which affects the normal swing accuracy of the pointer and the warning accuracy of the alarm.

[0005] Therefore, the utility model optimizes and improves the existing problems in the safety alarm of pressure vessel, and designs a mechanical control type pressure automatic alarm for pressure vessel to better solve the problems in the prior art. CONTENT OF THE UTILITY MODEL

[0006] The utility model discloses a pressure automatic alarm for pressure vessel, which comprises a pressure-bearing pipe joint installed on the top of the corresponding pipe opening of the pressure vessel, a pressure-bearing cavity in the pressure-bearing pipe joint is in communication with the inside of the pressure vessel, a pressure-bearing displacement mechanism is installed in the pressure-bearing cavity, an upper plugging flange end cover is installed in the pressure-bearing cavity on the top of the pressure-bearing displacement mechanism, a controller and an audible and visual alarm are respectively installed on the two sides of the top of the upper plugging flange end cover, pressure triggers are respectively installed in the mounting holes on the two sides of the upper plugging flange end cover, and the lower ends of the pressure triggers extend into the pressure-bearing cavity and are used in cooperation with the pressure-bearing displacement mechanism.

[0007] Preferably, in any of the above-mentioned solutions, the pressure-bearing pipe joint comprises a pressure-bearing vertical pipe, the lower end of the pressure-bearing vertical pipe is movably and sealingly extended into the inside of the corresponding pipe opening of the pressure vessel, and a connecting disc for being fixedly connected with the corresponding pipe opening of the pressure vessel is fixed on the outer side wall of the middle part of the pressure-bearing vertical pipe.

[0008] Preferably, in any of the above-mentioned solutions, the pressure-bearing displacement mechanism comprises a sealing piston installed in the pressure-bearing cavity of the pressure-bearing vertical pipe, a smooth vertical shaft is fixedly installed at the top center of the sealing piston, the top of the smooth vertical shaft is movably and screwingly extended above the upper plugging flange end cover, a pressure spring is coaxially sleeved on the outer side wall of the smooth vertical shaft in the pressure-bearing cavity, the bottom of the pressure spring abuts against the top of the sealing piston, a trigger disc is coaxially fixedly connected with the upper part of the outer side wall of the smooth vertical shaft, the bottom of the trigger disc movably abuts against the top of the pressure spring, and the trigger disc is used for moving upward and triggering the two pressure triggers when the pressure in the pressure vessel is higher than a pre-warning value.

[0009] Preferably, in any of the above-mentioned solutions, the upper plugging flange end cover comprises an upper end screw pipe vertically arranged and screwingly connected in the pressure-bearing cavity of the pressure-bearing vertical pipe, the top of the upper end screw pipe is flush with the top of the pressure-bearing vertical pipe, a top mounting platform is fixedly installed on the top of the upper end screw pipe, a center hole for the smooth vertical shaft to movably extend out is arranged at the center of the top mounting platform, and mounting holes for fixedly installing the pressure triggers are arranged on the two sides of the center hole.

[0010] Preferably in any of the above solutions, the pressure trigger comprises a fixed tube fixedly installed in the mounting hole, a pressure sensor fixedly installed at the bottom of the fixed tube, each pressure sensor in working condition is used for abutting against the trigger disc respectively, a signal line is installed in the cavity of the fixed tube, the outer end of the signal line is upwardly out of the top mounting platform and is signal connected with the controller; wherein the signal output end of the controller is signal connected with the sound-light alarm.

[0011] Preferably in any of the above solutions, a plurality of guide balls are uniformly movably installed on the outer side wall of the trigger disc along the circumference thereof, the outer side wall of each guide ball abuts against the inner cavity side wall of the upper end screw pipe.

[0012] Preferably in any of the above solutions, an adjusting hand wheel is fixedly installed at the top of the smooth vertical shaft.

[0013] Preferably in any of the above solutions, the bottom of each sealing piston abuts against the bottom of the pressure bearing cavity, a scraping plate is fixedly installed at the bottom center of the sealing piston, the two sides of the scraping plate movably abut against the inner side wall of the lower pipe opening at the bottom of the pressure bearing cavity, when the adjusting hand wheel rotates, the sealing piston and the scraping plate can be driven to rotate and complete the scraping and cleaning of the dirt at the inner side wall of the lower pipe opening.

[0014] Compared with the prior art, the pressure automatic alarm for pressure vessel has the following beneficial effects:

[0015] 1. The pressure alarm adopts the mode of two pressure triggers matched and symmetrically installed, when any one of the pressure triggers is triggered, the sound-light alarm can be triggered, sound-light alarm is realized, the reliability of the pressure alarm triggering is effectively improved, and the safety hidden danger caused by the failure of a single trigger is avoided.

[0016] 2. The pressure automatic alarm for pressure vessel is directly installed at the pipe opening part of the pressure vessel, is convenient and fast to install, can realize power supply by the power supply matched with the controller in use, and can preset the pressure threshold value of the current pressure vessel and select the pressure spring with the corresponding elastic coefficient when setting the alarm pressure value.

[0017] 3. The pressure automatic alarm for pressure vessel can prevent the slag in the pressure vessel from entering the inside of the alarm along with the airflow by the sealing of the sealing piston in the process of regular use; and the dirt accumulated at the lower pipe opening part can be regularly and quickly removed by the rotation of the scraping plate at the bottom of the sealing piston of the alarm. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. In all the drawings, similar elements or components are generally identified by similar reference signs. In the drawings, the elements or components are not necessarily drawn according to the actual proportions.

[0019] Figure 1 It is an external structure schematic diagram of the present application.

[0020] Figure 2 It is an internal structure schematic diagram of the present application.

[0021] Figure 3 It is an internal partial sectional structure schematic diagram of the present application.

[0022] Figure 4 It is a bottom view structure schematic diagram of the present application.

[0023] In the drawings, 1, corresponding pipe opening; 2, pressure pipe joint; 201, pressure vertical pipe; 202, connecting disc; 3, pressure pipe cavity; 4, upper sealing flange end cover; 5, controller; 6, sound-light alarm; 7, mounting hole; 8, trigger disc; 9, top mounting platform; 10, center hole; 11, fixed pipe; 12, pressure sensor; 13, signal line; 14, guide ball; 15, adjusting hand wheel; 16, scraping plate; 17, lower pipe opening; 18, sealing piston; 19, smooth vertical shaft; 20, upper end screw pipe; 21, pressure spring. DETAILED DESCRIPTION

[0024] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application. The specific structure of the present application is shown in Figures 1-4 .

[0025] Embodiment 1: A pressure automatic alarm for pressure vessel, comprising a pressure pipe joint 2 installed on the top of the corresponding pipe opening 1 of the pressure vessel, a pressure pipe cavity 3 inside the pressure pipe joint 2 is in communication with the inside of the pressure vessel, a pressure displacement mechanism is installed inside the pressure pipe cavity 3, an upper sealing flange end cover 4 is installed in the pressure pipe cavity 3 on the top of the pressure displacement mechanism, a controller 5 and a sound-light alarm 6 are respectively installed on the top of the two sides of the upper sealing flange end cover 4, pressure triggers are respectively installed in the mounting holes 7 on the two sides of the upper sealing flange end cover 4, and the lower ends of the pressure triggers are all extended into the inside of the pressure pipe cavity 3 and used in cooperation with the pressure displacement mechanism.

[0026] The pressure automatic alarm for the pressure container is integrally fixedly connected to the corresponding pipe opening 1 of the pressure container by the pressure-bearing vertical pipe 201 of the pressure-bearing pipe joint 2, so that the quick locking and positioning purpose is achieved; when the positioning is completed, the whole alarm is connected to the power supply, and when the material storage or the related reaction is carried out in the pressure container and the pressure exceeds the standard, the pressure-bearing displacement mechanism is effectively pushed and moved by the internal pressure, the pressure trigger, the controller 5 and the sound-light alarm 6 are triggered in linkage, so that the safety alarm purpose is achieved.

[0027] Preferably, in any of the above schemes, the pressure-bearing pipe joint 2 comprises a vertically arranged pressure-bearing vertical pipe 201, the lower end of the pressure-bearing vertical pipe 201 is movably and sealingly extended to the inside of the corresponding pipe opening 1 of the pressure container, and a connecting disc 202 for being fixedly connected with the corresponding pipe opening 1 of the pressure container is fixed to the outer side wall of the middle part of the pressure-bearing vertical pipe 201.

[0028] When the pressure-bearing vertical pipe 201 is installed, the connecting disc 202 can be used to be bolted and fixed with the flange at the pipe opening of the corresponding pressure container, so that the firmness and pressure-bearing effect after installation and connection are ensured.

[0029] Preferably, in any of the above schemes, the pressure-bearing displacement mechanism comprises a sealing piston 18 which is fitted and installed in the pressure-bearing cavity 3 of the pressure-bearing vertical pipe 201, a smooth vertical shaft 19 is fixedly installed at the top center of the sealing piston 18, the top of the smooth vertical shaft 19 is movably and screwingly extended to the upper side of the upper blocking flange end cover 4, a pressure spring 21 is coaxially sleeved on the outer side wall of the smooth vertical shaft 19 in the pressure-bearing cavity 3, the bottom of the pressure spring 21 abuts against the top of the sealing piston 18, a trigger disc 8 is coaxially fixedly connected to the upper outer side wall of the smooth vertical shaft 19, the bottom of the trigger disc 8 movably abuts against the top of the pressure spring 21, and the trigger disc 8 is used for moving upward and triggering the two pressure triggers when the internal pressure of the pressure container is higher than the pre-warning value.

[0030] It should be noted that the pressure-bearing displacement mechanism is movably and sealingly installed in the pressure-bearing cavity 3 of the pressure-bearing vertical pipe 201 by the sealing piston 18, when the lower pressure is greater than the set pressure, the sealing piston 18 is pushed to move upward, the upward movement overcomes the elastic force of the pressure spring 21, at the same time, the trigger disc 8 is driven to move upward, finally, the top of the trigger disc 8 abuts against and triggers the corresponding pressure trigger, the pressure trigger transmits the signal to the existing controller 5, the controller 5 controls the sound-light alarm 6 to alarm, so that the pressure alarm is realized.

[0031] In any of the above solutions, preferably, the upper blocking flange end cover 4 comprises an upper end screw pipe 20 vertically arranged and screwed in the pressure-bearing pipe cavity 3 of the pressure-bearing riser 201, the top of the upper end screw pipe 20 is flush with the top of the pressure-bearing riser 201, a top mounting platform 9 is fixedly mounted on the top of the upper end screw pipe 20, a central hole 10 is arranged in the center of the top mounting platform 9 for the smooth vertical shaft 19 to pass through, and mounting holes 7 for fixing the pressure trigger are arranged on both sides of the central hole 10.

[0032] The upper blocking flange end cover 4 is positioned by screwing the upper end screw pipe 20 when installed, which can ensure the stability of the top mounting platform 9 after positioning is completed; in addition, the upper part of the smooth vertical shaft 19 passes through the gap fitting mounting hole 7, which can ensure that the smooth vertical shaft 19 is effectively displaced upward when it is subjected to the thrust of the sealing piston 18.

[0033] In any of the above solutions, preferably, the pressure trigger comprises a fixed pipe 11 fixedly mounted in the mounting hole 7, a pressure sensor 12 is fixedly mounted at the bottom of the fixed pipe 11, each pressure sensor 12 is used to abut against the trigger disc 8 in the working state, a signal line 13 is installed in the pipe cavity of the fixed pipe 11, the outer ends of the signal line 13 are all upwardly passed to above the top mounting platform 9 and are signal connected with the controller 5; wherein the signal output end of the controller 5 is signal connected with the sound-light alarm 6.

[0034] The pressure trigger relies on the fixed pipe 11 to effectively position the pressure sensor 12, and at the same time, effectively protects the internal wiring, ensuring the safety of the wiring.

[0035] Embodiment 2: Compared with Embodiment 1, the difference lies in that it further comprises the following technical features:

[0036] In any of the above solutions, preferably, a plurality of guide balls 14 are uniformly and movably mounted on the outer side wall of the trigger disc 8 along the circumference thereof, and the outer side wall of each guide ball 14 abuts against the inner cavity side wall of the upper end screw pipe 20.

[0037] When the sealing piston 18 is displaced upward, the trigger disc 8 is also displaced upward, and in the process of upward displacement, the guide balls 14 can play a guiding role.

[0038] In any of the above solutions, preferably, an adjusting hand wheel 15 is fixedly mounted on the top of the smooth vertical shaft 19.

[0039] In any of the above schemes, preferably, the bottom of each sealing piston 18 abuts against the bottom of the pressure-bearing pipe cavity 3, a scraping plate 16 is fixedly installed at the center of the bottom of the sealing piston 18, the two sides of the scraping plate 16 respectively movably abut against the inner side wall of the lower pipe opening 17 at the bottom of the pressure-bearing pipe cavity 3, and when the adjusting hand wheel 15 rotates, it can drive the sealing piston 18 and the scraping plate 16 to rotate and complete the scraping and cleaning of the dirt at the inner side wall of the lower pipe opening 17.

[0040] The adjusting hand wheel 15 is arranged to drive the current smooth vertical shaft 19 and the entire sealing piston 18 at the lower end thereof to rotate, and when the sealing piston 18 rotates, the scraping plate 16 is driven to rotate, thereby achieving the purpose of scraping.

[0041] Specific working principle: The automatic alarm is integrally fixedly connected to the pressure-bearing vertical pipe 201 of the pressure-bearing pipe joint 2 and is installed at the top of the corresponding pipe opening 1 of the pressure container to achieve the purpose of quick locking and positioning; after positioning is completed, the entire alarm is connected to the power supply, and when the pressure container is used for storing materials or related reactions and the pressure exceeds the standard, the pressure-bearing displacement mechanism is effectively pushed and moved by the internal pressure to trigger the pressure trigger, the controller 5 and the sound-light alarm 6, thereby achieving the purpose of safety alarm.

[0042] As can be seen from the above, the pressure alarm adopts the symmetrical installation mode of two pressure triggers, and when any one of the pressure triggers is triggered, the sound-light alarm 6 can be triggered to realize sound-light alarm, effectively improving the reliability of the pressure alarm trigger and avoiding the safety hazard caused by the failure of a single trigger; the pressure automatic alarm is directly installed at the pipe opening part of the pressure container, is convenient and quick to install, can be powered by the power supply of the controller 5 during use, and can preset the pressure threshold of the current pressure container and select the pressure spring 21 with the corresponding elastic coefficient during the setting of the alarm pressure value; during regular use, the sealing piston 18 can prevent the slag in the pressure container from entering the inside of the alarm along with the airflow; at the same time, the scraping plate 16 at the bottom of the sealing piston 18 of the alarm can periodically and quickly remove the dirt accumulated at the lower pipe opening 17.

[0043] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application; any alternative improvement or change made by those skilled in the art to the embodiments of the present application falls within the protection scope of the present application.

[0044] The parts not described in detail in the present application are well-known to those skilled in the art.

Claims

1. A pressure automatic alarm for pressure vessels, characterized by: The application relates to a pressure-bearing pipe joint, which comprises a pressure-bearing pipe joint installed on the top of a corresponding pipe orifice of a pressure container, a pressure-bearing pipe cavity in the pressure-bearing pipe joint is connected with the inside of the pressure container, a pressure-bearing displacement mechanism is installed in the pressure-bearing pipe cavity, an upper sealing flange end cover is installed in the pressure-bearing pipe cavity on the top of the pressure-bearing displacement mechanism, a controller and an audible and visual alarm are installed on the top of the upper sealing flange end cover, pressure triggers are installed in the installation holes on the two sides of the upper sealing flange end cover, and the lower ends of the pressure triggers are extended into the pressure-bearing pipe cavity and used in cooperation with the pressure-bearing displacement mechanism.

2. The pressure automatic alarm for pressure vessel according to claim 1, characterized in that: The pressure-bearing pipe joint comprises a vertically arranged pressure-bearing vertical pipe, the lower end of the pressure-bearing vertical pipe is movably and sealingly extended into the inside of the corresponding pipe orifice of the pressure container, and a connecting disc for being fixedly connected with the corresponding pipe orifice of the pressure container is fixed on the outer side wall of the middle part of the pressure-bearing vertical pipe.

3. The pressure automatic alarm for pressure vessel according to claim 2, characterized in that: The pressure-bearing displacement mechanism comprises a sealing piston which is cooperatively installed in the pressure-bearing pipe cavity of the pressure-bearing vertical pipe, a smooth vertical shaft is fixedly installed on the top center of the sealing piston, the top of the smooth vertical shaft is movably and screwingly extended to the upper side of the upper sealing flange end cover, a pressure spring is coaxially sleeved on the outer side wall of the smooth vertical shaft in the pressure-bearing pipe cavity, the bottom of the pressure spring is abutted against the top of the sealing piston, a trigger disc is coaxially fixedly connected with the upper outer side wall of the smooth vertical shaft, the bottom of the trigger disc is movably abutted against the top of the pressure spring, and the trigger disc is used for moving upwards and triggering the two pressure triggers when the pressure in the pressure container is higher than a prewarning value.

4. The pressure automatic alarm for pressure vessel according to claim 3, characterized in that: The upper sealing flange end cover comprises an upper end screw pipe which is vertically arranged and screwingly connected in the pressure-bearing pipe cavity of the pressure-bearing vertical pipe, the top of the upper end screw pipe is flush with the top of the pressure-bearing vertical pipe, a top installation platform is fixedly installed on the top of the upper end screw pipe, a center hole for movably extending the smooth vertical shaft is arranged on the center of the top installation platform, and installation holes for fixedly installing the pressure triggers are arranged on the two sides of the center hole.

5. The pressure automatic alarm for pressure vessel according to claim 4, characterized in that: The pressure trigger comprises a fixed pipe which is fixedly installed in the installation hole, a pressure sensor is fixedly installed on the bottom of the fixed pipe, each pressure sensor is used for cooperating with the trigger disc in the working state, a signal line is installed in the pipe cavity of the fixed pipe, the outer ends of the signal lines are all extended upwards to the upper side of the top installation platform and are signal-connected with the controller, and the signal output end of the controller is signal-connected with the audible and visual alarm.

6. The pressure automatic alarm for pressure vessel according to claim 5, characterized in that: A plurality of guide balls are movably installed on the outer side wall of the trigger disc along the circumference of the trigger disc, and the outer side walls of the guide balls are all abutted against the inner cavity side wall of the upper end screw pipe.

7. The pressure automatic alarm for pressure vessel according to claim 6, characterized in that: An adjusting hand wheel is fixedly installed on the top of the smooth vertical shaft.

8. The pressure automatic alarm for pressure vessel according to claim 7, characterized in that: The bottom of each sealing piston is abutted against the bottom of the pressure-bearing pipe cavity, a scraping plate is fixedly installed at the center of the bottom of the sealing piston, the two sides of the scraping plate are respectively movably abutted against the inner side wall of the lower pipe opening at the bottom of the pressure-bearing pipe cavity, and when the adjusting hand wheel is rotated, the sealing piston and the scraping plate can be driven to rotate and complete scraping and cleaning of the dirt at the inner side wall of the lower pipe opening.

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