CN114252256A - Test device and method for detecting thermal-state mechanical property of safety valve - Google Patents
Test device and method for detecting thermal-state mechanical property of safety valve Download PDFInfo
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- CN114252256A CN114252256A CN202111645431.XA CN202111645431A CN114252256A CN 114252256 A CN114252256 A CN 114252256A CN 202111645431 A CN202111645431 A CN 202111645431A CN 114252256 A CN114252256 A CN 114252256A
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- 238000012360 testing method Methods 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 17
- 238000009833 condensation Methods 0.000 claims description 14
- 230000005494 condensation Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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Abstract
The invention relates to the technical field of valve detection equipment, in particular to a test device for detecting the thermal-state mechanical property of a safety valve; the test device for detecting the thermal mechanical property of the safety valve comprises a test box and a mounting frame, the mounting frame is arranged on the inner side of the test box, the mounting frame comprises a fixing head and a steam frame, the inner side of the test box is arranged on the steam frame, the fixing head is arranged on the inner side, far away from the test box, of the steam frame, the fixing head comprises a matching ring and a plurality of rotating hooks, the matching ring is arranged on the inner side of the steam frame, the plurality of rotating hooks are uniformly distributed on one side, far away from the steam frame, of the matching ring, the pressing and matching ring is extruded through the safety valve, the plurality of rotating hooks are driven to tighten, the safety valve is fixed, and the problem that the existing test equipment is troublesome in the process of installing the valve is solved by the action of screwing the bolt for many times.
Description
Technical Field
The invention relates to the technical field of valve detection equipment, in particular to a test device and a method for detecting thermal-state mechanical performance of a safety valve.
Background
Along with the rapid development of economic construction in China, more and more equipment project projects with pressure control are provided, the pressure of equipment needs to be monitored at any time in the operation process of the equipment, abnormal change of the pressure in the equipment is prevented, if the equipment fails, pressure cannot be relieved in time, the equipment is damaged slightly, personnel are injured seriously, and the pressure control equipment is also a reason for continuous accidents of various pressure control equipment in the early stage;
the safety valve is a main pressure release device for preventing the system pressure from being overlarge and ensuring the personnel safety and the equipment safety, when the medium pressure in the equipment or the pipeline rises to exceed a specified value, the medium is discharged to the outside of the system to prevent the medium pressure in the pipeline or the special valve with the medium pressure exceeding a specified value, so that the safety valve plays an important role in protecting the personal safety and the equipment operation, and therefore in order to ensure the performance of the safety valve under an extreme condition, all the safety valves need to be subjected to a thermal state performance test through test equipment before leaving a factory;
the existing test equipment is troublesome in installation process, a worker is required to disassemble the valve which is finished by detecting through unscrewing the bolts, the undetected valve is installed on the test equipment through the bolts again, the detection efficiency is low, the phase change is realized, the production time is prolonged, and the production efficiency is reduced.
Disclosure of Invention
The invention aims to provide a test device for detecting the thermal-state mechanical property of a safety valve, which solves the problem that the existing test equipment is troublesome in the process of installing the valve.
In order to achieve the purpose, the invention provides a test device for detecting the thermal mechanical property of a safety valve, which comprises a test box and a mounting rack, wherein the mounting rack is arranged on the inner side of the test box and is fixedly connected with the test box;
the fixed head includes cooperation ring and a plurality of rotating hook, the cooperation ring set up in the inboard of steam frame, and with steam frame sliding connection, a plurality of the rotating hook equipartition is in keeping away from of cooperation ring steam frame one side, and a plurality of the rotating hook all with cooperation ring hinged joint.
When the safety valve is installed, the safety valve is inserted between the rotating hooks and is in contact with the matching ring, then the safety valve is extruded towards the steam rack, the safety valve pushes the matching ring, the rotating hooks are driven to slide on the inner side of the steam rack, and the rotating hooks are matched with the steam rack to shrink so as to clamp and fix the safety valve.
The matching ring is provided with a sealing ring and a conical hole, the conical hole and the matching ring are arranged at the same axis and penetrate through the matching ring, the sealing ring is arranged on one side, close to the rotating hook, of the matching ring, and the sealing ring is sleeved on the outer side of the conical hole.
When the steam frame lets in high-pressure steam to the relief valve, high-pressure steam passes through the bell mouth gets into the relief valve, the sealing ring is used for improving the seal between cooperation ring and the relief valve, when the extrusion relief valve, the sealing ring receives pressure to take place deformation, closely laminates with the relief valve, prevents that high-pressure steam from spilling.
The steam rack comprises a circulation pipe and a sliding plug, the circulation pipe is arranged on the inner side of the test box and fixedly connected with the test box, one end, far away from the sealing ring, of the circulation pipe is externally connected with the steam stove, the sliding plug is arranged on the inner side of the circulation pipe and is in sliding connection with the circulation pipe, the sliding plug is arranged on the inner side of the test box, and the sliding plug is respectively matched with the plurality of rotating hooks.
When steam is not introduced, the sliding plug is in contact fit with the circulating pipe through a spring to seal the circulating pipe, after high-pressure steam is continuously introduced for a period of time, the air pressure of one side, away from the fitting ring, of the sliding plug is increased, the sliding plug is pushed towards the fitting ring by the high-pressure steam, and the circulating pipe is communicated with the safety valve.
The test box comprises a closed box and a condensation cabin, the closed box is sleeved on the outer side of the steam frame and fixedly connected with the steam frame, and the condensation cabin is arranged on one side of the closed box and fixedly connected with the closed box.
The safety valve is arranged on the inner side of the closed box for testing, and when the internal pressure of the safety valve reaches a set value and jumps up, high-pressure steam flows into the condensation cabin through the closed box for cooling, so that the steam is prevented from leaking.
The steam rack is fixedly connected with the steam rack, and the sliding door is arranged at the top of the inner side of the closed box and is in sliding connection with the box body.
The sliding door set up in the inboard of box, can with the sliding door when high-pressure steam spills with the inner wall of box compresses tightly, further promotes the seal of seal box prevents that steam from spilling and causing personnel's injury.
The invention also provides a method for detecting the thermal-state mechanical property of the safety valve, which adopts the test device for detecting the thermal-state mechanical property of the safety valve and specifically comprises the following steps;
opening the sliding door, inserting the output end of the safety valve into the fixing head to abut against the matching ring, extruding the safety valve towards the direction of the flow pipe, and installing the safety valve on the inner side of the test box through the rotating hook;
closing the sliding door, introducing high-pressure steam into the safety valve through a circulation pipe by the steam furnace, pushing the sliding plug to slide towards the direction of the matching ring by the high-pressure steam, communicating the circulation pipe with the safety valve, and simultaneously matching the sliding plug with the rotating hooks to enable the rotating hooks to shrink so as to further clamp the safety valve;
and after the safety valve jumps, stopping introducing steam into the safety valve, and opening the sliding door after high-pressure steam in the safety valve flows into the condensation cabin through the box body to take out the safety valve.
According to the test device for detecting the thermal mechanical property of the safety valve, the safety valve extrudes the matching ring to drive the rotating hooks to tighten, so that the safety valve is fixed, the action of screwing the bolt for multiple times is omitted, and the problem that the existing test device is troublesome in the process of installing the valve is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic axial-view structural diagram of a testing device for detecting thermal mechanical properties of a safety valve provided by the invention.
Fig. 2 is a schematic top view of a testing apparatus for detecting thermal mechanical properties of a safety valve according to the present invention.
Fig. 3 is a schematic front sectional view of a testing device for detecting thermal mechanical properties of a safety valve provided by the invention.
Fig. 4 is a partially enlarged schematic view of a front view cross-sectional structure of a testing device for detecting thermal mechanical properties of a safety valve provided by the invention.
FIG. 5 is a step diagram of a test method for detecting the thermal mechanical property of a safety valve according to the present invention.
1-mounting rack, 2-testing box, 3-fixing head, 4-steam rack, 5-sealing box, 6-condensation chamber, 7-rotating hook, 8-matching ring, 9-circulating pipe, 10-sliding plug, 11-box body, 12-sliding door, 13-oblique block, 14-sawtooth, 15-sealing ring, 16-conical hole, 17-conical plug, 18-through hole, 19-air outlet pipe and 20-cylinder.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 5, the present invention provides a test apparatus for detecting thermal mechanical properties of a safety valve, the test apparatus for detecting thermal mechanical properties of a safety valve includes a test box 2 and a mounting rack 1, the mounting rack 1 is disposed inside the test box 2 and is fixedly connected to the test box 2, the mounting rack 1 includes a fixing head 3 and a steam rack 4, the steam rack 4 is disposed inside the test box 2 and is fixedly connected to the test box 2, the fixing head 3 is disposed inside one end of the steam rack 4 away from the test box 2 and is slidably connected to the steam rack 4;
fixed head 3 includes cooperation ring 8 and a plurality of rotating hook 7, cooperation ring 8 set up in the inboard of steam frame 4, and with steam frame 4 sliding connection, a plurality of rotating hook 7 equipartition is in the keeping away from of cooperation ring 8 steam frame 4 one side, and a plurality of rotating hook 7 all with cooperation ring 8 hinged joint.
In the embodiment, when the safety valve is viewed from side, the safety valve is inserted into the inner side of the fixing head 3, the safety valve is pushed towards the steam rack 4 to extrude the matching ring 8, the matching ring 8 drives the rotating hook 7 to slide on the inner side of the steam rack 4, the rotating hook 7 and the steam rack 4 are matched and contracted to clamp and fix the safety valve, the operation of screwing a bolt for many times is omitted, and the problem that the valve installation process of the existing test equipment is troublesome is solved.
Furthermore, each of the rotating hooks 7 is provided with a sawtooth 14 and an inclined block 13, the sawtooth 14 is arranged at one end of the rotating hook 7 far away from the matching ring 8, the sawtooth 14 is arranged at the inner side of the rotating hook 7, the inclined block 13 is arranged at one side of the rotating hook 7 far away from the sawtooth 14, and the inclined block 13 is matched with the steam rack 4;
the matching ring 8 is provided with a sealing ring 15 and a tapered hole 16, the tapered hole 16 is arranged coaxially with the matching ring 8 and penetrates through the matching ring 8, the sealing ring 15 is arranged on one side, close to the rotating hook 7, of the matching ring 8, and the sealing ring 15 is sleeved on the outer side of the tapered hole 16;
the steam rack 4 comprises a circulation pipe 9 and a sliding plug 10, the circulation pipe 9 is arranged on the inner side of the test box 2 and is fixedly connected with the test box 2, one end, far away from the sealing ring 15, of the circulation pipe 9 is externally connected with a steam oven, the sliding plug 10 is arranged on the inner side of the circulation pipe 9 and is in sliding connection with the circulation pipe 9, the sliding plug 10 is arranged on the inner side of the test box 2, and the sliding plug 10 is respectively matched with the rotating hooks 7;
the sliding plug 10 is provided with a conical plug 17 and a plurality of through holes 18, the conical plug 17 is arranged at one end of the sliding plug 10 far away from the matching ring 8, the conical plug 17 is matched with the flow pipe 9, and the plurality of through holes 18 are uniformly distributed on the side surface of the conical plug 17 and penetrate through the conical plug 17;
the test box 2 comprises a closed box 5 and a condensation cabin 6, the closed box 5 is sleeved on the outer side of the steam rack 4 and is fixedly connected with the steam rack 4, and the condensation cabin 6 is arranged on one side of the closed box 5 and is fixedly connected with the closed box 5;
the closed box 5 comprises a box body 11 and a sliding door 12, the box body 11 is sleeved on the outer side of the steam rack 4 and is fixedly connected with the steam rack 4, and the sliding door 12 is arranged on the top of the inner side of the closed box 5 and is in sliding connection with the box body 11;
the box 11 is provided with an air outlet pipe 19 and an air cylinder 20, the air cylinder 20 is arranged in the box 11 and far away from one side of the steam rack 4, the air outlet pipe 19 is arranged on one side, close to the condensation cabin 6, of the box 11 and penetrates through the side wall of the box 11 and the condensation cabin 6 to be communicated.
In the embodiment, when no steam is introduced, the conical plug 17 is in contact fit with the circulation pipe 9 through a spring to close the circulation pipe 9, the mounting valve is inserted into the fixed head 3 to be in contact fit with the sealing ring 15, the mounting valve pushes the fitting ring 8, so that a plurality of the rotating hooks 7 are driven to slide on the inner side of the sliding plug 10, a plurality of the rotating hooks 7 are matched with the sliding plug 10 through the inclined block 13 to be tightened inwards to clamp the safety valve, the saw teeth 14 can increase the friction force between the rotating hooks 7 and the safety valve to improve the clamping effect of the fixed head 3, then the air cylinder 20 abuts against the other end of the extended safety valve to prevent the safety valve from falling due to looseness in the rotating hooks 7 in the test process, the sliding door 12 is closed and then the steam oven is started to introduce high-pressure steam into the circulation pipe 9, the high-pressure steam pushes the conical plug 17 to slide towards the direction of the matching ring 8, the matching ring 8 further drives the rotating hooks 7 to tighten, the safety valve is further clamped and fixed, meanwhile, the conical plug 17 is separated from the circulating pipe 9, the high-pressure steam passes through the sliding plug 10 through the through holes 18 and passes through the matching ring 8 along the conical hole 16 to enter the inside of the safety valve, after the internal air pressure of the safety valve rises, the safety valve is lifted up to be communicated with the air outlet pipe 19, the high-pressure steam inside the safety valve passes through the box body 11 along the air outlet pipe 19 to enter the condensation chamber 6 for cooling treatment, personnel injury caused by direct discharge of the high-pressure steam is avoided, when the safety valve leaks, the internal air pressure of the box body 11 increases to push the sliding door 12 to be attached to the inner wall of the box body 11, and the air tightness of the closed box 5 is improved, preventing high pressure steam from leaking.
Further, the invention also provides a method for detecting the thermal-state mechanical property of the safety valve, which adopts the test device for detecting the thermal-state mechanical property of the safety valve and specifically comprises the following steps;
s001, opening a sliding door 12, inserting the output end of the safety valve into the fixing head 3 to be abutted against the matching ring 8, extruding the safety valve in the direction of the flow pipe 9, and installing the safety valve on the inner side of the test box 2 through a rotating hook 7;
s002, the sliding door 12 is closed, high-pressure steam is introduced into the safety valve through the circulation pipe 9 by the steam furnace, the high-pressure steam pushes the sliding plug 10 to slide towards the direction of the matching ring 8, the circulation pipe 9 is communicated with the safety valve, and meanwhile, the sliding plug 10 is matched with the rotating hooks 7 to enable the rotating hooks 7 to shrink, so that the safety valve is further clamped;
and S003, stopping introducing steam into the safety valve after the safety valve jumps, opening the sliding door 12 after the high-pressure steam in the safety valve flows into the condensation cabin 6 through the box body 11, and taking out the safety valve.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A test device for detecting the thermal mechanical property of a safety valve is characterized in that,
the test device for detecting the thermal mechanical property of the safety valve comprises a test box and a mounting frame, wherein the mounting frame is arranged on the inner side of the test box and is fixedly connected with the test box, the mounting frame comprises a fixing head and a steam frame, the steam frame is arranged on the inner side of the test box and is fixedly connected with the test box, and the fixing head is arranged on the inner side of one end, far away from the test box, of the steam frame and is in sliding connection with the steam frame;
the fixed head includes cooperation ring and a plurality of rotating hook, the cooperation ring set up in the inboard of steam frame, and with steam frame sliding connection, a plurality of the rotating hook equipartition is in keeping away from of cooperation ring steam frame one side, and a plurality of the rotating hook all with cooperation ring hinged joint.
2. The test device for testing the thermal mechanical property of the safety valve according to claim 1,
the cooperation ring has sealing ring and bell mouth, the bell mouth with the cooperation ring sets up with the axial lead, and runs through the cooperation ring, the sealing ring set up in the cooperation ring be close to rotating hook one side, just the sealing ring cover is in the outside of bell mouth.
3. The test device for testing the thermal mechanical property of the safety valve according to claim 2,
the steam frame comprises a runner pipe and a sliding plug, the runner pipe is arranged on the inner side of the test box and fixedly connected with the test box, one end of the runner pipe, far away from the sealing ring, is externally connected with the steam furnace, the sliding plug is arranged on the inner side of the runner pipe and is in sliding connection with the runner pipe, the sliding plug is arranged on the inner side of the test box, and the sliding plug is respectively matched with the plurality of rotating hooks.
4. A test device for testing the thermal mechanical properties of a safety valve according to claim 3,
the test box comprises a closed box and a condensation cabin, the closed box is sleeved on the outer side of the steam frame and fixedly connected with the steam frame, and the condensation cabin is arranged on one side of the closed box and fixedly connected with the closed box.
5. The test device for testing the thermal mechanical property of the safety valve according to claim 4,
the closed box comprises a box body and a sliding door, the box body is sleeved on the outer side of the steam rack and fixedly connected with the steam rack, and the sliding door is arranged at the top of the inner side of the closed box and slidably connected with the box body.
6. A method for detecting the thermal mechanical property of a safety valve, which adopts the test device for detecting the thermal mechanical property of the safety valve as claimed in claim 5, is characterized by comprising the following steps;
opening the sliding door, inserting the output end of the safety valve into the fixing head to abut against the matching ring, extruding the safety valve towards the direction of the flow pipe, and installing the safety valve on the inner side of the test box through the rotating hook;
closing the sliding door, introducing high-pressure steam into the safety valve through a circulation pipe by the steam furnace, pushing the sliding plug to slide towards the direction of the matching ring by the high-pressure steam, communicating the circulation pipe with the safety valve, and simultaneously matching the sliding plug with the rotating hooks to enable the rotating hooks to shrink so as to further clamp the safety valve;
and after the safety valve jumps, stopping introducing steam into the safety valve, and opening the sliding door after high-pressure steam in the safety valve flows into the condensation cabin through the box body to take out the safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111645431.XA CN114252256B (en) | 2021-12-30 | Test device and method for detecting thermal mechanical property of safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111645431.XA CN114252256B (en) | 2021-12-30 | Test device and method for detecting thermal mechanical property of safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114252256A true CN114252256A (en) | 2022-03-29 |
| CN114252256B CN114252256B (en) | 2024-06-28 |
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|---|---|---|---|---|
| CN104406781A (en) * | 2014-11-26 | 2015-03-11 | 广西华银铝业有限公司 | On-line safety valve checking method and device |
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| CN104406781A (en) * | 2014-11-26 | 2015-03-11 | 广西华银铝业有限公司 | On-line safety valve checking method and device |
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| 李博 等: ""蒸汽安全阀冷态与热态校验整定压力差异探讨"", 《中国特种设备安全》, vol. 25, no. 06, 30 June 2009 (2009-06-30), pages 40 - 42 * |
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