CN209927385U - Valve rod packing testing arrangement - Google Patents
Valve rod packing testing arrangement Download PDFInfo
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- CN209927385U CN209927385U CN201920983373.3U CN201920983373U CN209927385U CN 209927385 U CN209927385 U CN 209927385U CN 201920983373 U CN201920983373 U CN 201920983373U CN 209927385 U CN209927385 U CN 209927385U
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- valve rod
- air pressure
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- 238000012360 testing method Methods 0.000 title claims abstract description 98
- 238000012856 packing Methods 0.000 title claims abstract description 60
- 238000007789 sealing Methods 0.000 claims abstract description 62
- 210000004907 gland Anatomy 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims abstract description 6
- 238000013016 damping Methods 0.000 claims description 3
- 238000011056 performance test Methods 0.000 abstract description 3
- 238000013102 re-test Methods 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a valve rod packing testing arrangement, concretely relates to valve packing sealing performance test device field, including the box packing body, box packing body middle part swing joint has the test valve rod, the top fixedly connected with drive block of test valve rod, the surperficial swing joint of test valve rod has the gland, the gland passes through the top of bolt fixed connection at the box packing body, the bottom swing joint of gland has the filler, and packs swing joint in the inside of the box packing body, the atmospheric pressure chamber has been seted up to the inside of the box packing body. The utility model discloses a sealed pad is sealed at the junction of test head with the atmospheric pressure chamber, makes through sealing washer cooperation seal groove to seal in the inside of rolling disc, observes whether second baroceptor's reading changes when the test, if second baroceptor's numerical value changes then numerical value is inaccurate, needs retest to can realize the accurate purpose of test result.
Description
Technical Field
The utility model relates to a valve packing sealing performance test device technical field, more specifically says, the utility model relates to a valve rod packing testing arrangement.
Background
The packing is generally arranged between the valve rod and the valve cover of the valve to ensure the sealing between the valve rod and the valve cover, and the packing is easy to be worn by the valve rod to generate leakage along with the increase of the opening and closing times of the valve rod because the valve rod and the packing move mutually. The packing is generally installed in a packing box between the valve rod and the valve cover in a pressing mode through the pressing cover, if the pressing cover pressure is too large, the opening and closing torque of the valve rod is increased, and if the pressing cover pressure is too small, the pressing force of the packing is insufficient, and the packing is easy to leak. Therefore, when the valve with each specification is installed, the packing pressing force, the torque and the sealing performance of the packing are tested, and the required pressing force and the required production torque under the condition of ensuring the sealing performance are measured. At present, the method for testing the pressing force and the torque of the valve rod packing under the condition of ensuring the sealing performance tests the whole valve with each specification, and the method is time-consuming and labor-consuming in installation and test, low in efficiency and high in test cost.
Patent application publication No. CN 201420592622.3's patent discloses a valve rod packing testing arrangement, the utility model discloses an advantage utilizes the valve gap packing letter of packing letter body and rotary rod simulation valve and valve rod to constitute valve rod packing testing arrangement, use the bore according to the valve, the material of pressure and filler, under the condition of guaranteeing to pack at the sealed requirement of life deadline in, the required pressure of simulation test packing, the packing force of gland when confirming the valve installation, its test is convenient, high efficiency, and the test cost is low.
However, the above technical solutions still have many disadvantages in practical use, such as inaccurate test results caused by gas leaking from the test head.
Therefore, a valve rod packing testing device with accurate testing result is needed.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides a valve rod packing testing arrangement seals at the junction of test head and atmospheric pressure chamber through sealed pad, makes through sealing washer cooperation seal groove and can seal in the inside of rolling disc, observes whether second baroceptor's reading changes when the test, if second baroceptor's numerical value changes then numerical value is inaccurate, need heavily to test to can realize the accurate purpose of test result.
In order to achieve the above object, the utility model provides a following technical scheme: a valve rod packing test device comprises a packing box body, wherein a test valve rod is movably connected to the middle of the packing box body, a driving block is fixedly connected to the top of the test valve rod, a gland is movably connected to the surface of the test valve rod and fixedly connected to the top of the packing box body through a bolt, packing is movably connected to the bottom of the gland and movably connected to the inside of the packing box body, a pneumatic cavity is formed in the packing box body, and a test assembly is movably arranged at the bottom of the inner wall of the pneumatic cavity;
the testing component comprises a testing head, wherein a sealing gasket is fixedly connected to the surface of the testing head, the surfaces of the testing head and the sealing gasket are movably connected to the inner wall of the air pressure cavity, a rotating disc is fixedly connected to the surface of the testing head, a sealing pipe is fixedly connected to the top of the rotating disc, a sealing ring is fixedly connected to the top of the sealing pipe, a sealing groove is formed in the bottom of the stuffing box body, the inner wall of the sealing groove is movably connected with the top of the sealing ring, an extruding ring is movably connected to the top of the inner wall of the sealing ring, a telescopic rod is fixedly connected to the bottom of the extruding ring and is fixedly connected to the top of the sealing pipe, a connector is fixedly connected to the bottom of the testing head, a testing pipe is fixedly connected to the bottom of the connector, a bearing is fixedly connected to the surface of the connector, a rotating rod, and electric putter's top fixedly connected with splint, the middle part of dwang articulates there is the double-end push rod.
In a preferred embodiment, a surface of the driving block is provided with a torsion sensor, a pressure sensor is arranged inside the packing, and a first air pressure sensor is arranged inside the air pressure cavity.
In a preferred embodiment, the size of the sealing groove is matched with that of the sealing ring, and a damping spring is fixedly connected to the surface of the telescopic rod.
In a preferred embodiment, a second air pressure sensor is fixedly connected to the top of the rotating disc.
In a preferred embodiment, the number of the bearings and the rotating rods is two, and the two rotating rods are arranged to intersect with each other.
In a preferred embodiment, the two ends of the double-ended push rod are respectively hinged with the middle parts of the two rotating rods facing each other.
In a preferred embodiment, the surface of the sealing gasket is closely attached to the surface of the test head and the inner wall of the air pressure chamber, respectively.
In a preferred embodiment, the number of the electric push rods is four, and the four electric push rods are respectively and fixedly connected to two ends of the two rotating rods.
The utility model discloses a technological effect and advantage:
1. the utility model discloses a sealed pad is sealed at the junction of test head and atmospheric pressure chamber, makes to seal in the inside of rolling disc through the sealing washer cooperation seal groove, observes whether the reading of second baroceptor changes during the test, if the numerical value of second baroceptor changes then numerical value is inaccurate, needs retest to realize the accurate purpose of test result;
2. the driving block is driven to rotate, so that the driving block drives the testing valve rod to rotate inside the stuffing box body, the testing component pressurizes the air inside the air pressure cavity, and the readings of the torque sensor, the pressure sensor and the first air pressure sensor are observed, so that the testing work can be completed.
Drawings
Fig. 1 is an overall structure front view of the present invention.
Fig. 2 is a front sectional view of the overall structure of the present invention.
Fig. 3 is an enlarged view of a structure in fig. 2 according to the present invention.
Fig. 4 is a bottom view of the rotating disc structure of the present invention.
Fig. 5 is a schematic view of the splint structure of the present invention.
The reference signs are: 1. a stuffing box; 2. testing the valve rod; 3. a drive block; 4. a gland; 5. a filler; 6. a pneumatic chamber; 7. testing the component; 8. a torque sensor; 9. a pressure sensor; 10. a first air pressure sensor; 11. a test head; 12. a gasket; 13. rotating the disc; 14. a sealing tube; 15. a second air pressure sensor; 16. a seal ring; 17. a sealing groove; 18. extruding a ring; 19. a telescopic rod; 20. a connector; 21. a bearing; 22. a test tube; 23. rotating the rod; 24. an electric push rod; 25. a splint; 26. double-end push rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The valve rod packing testing device shown in the figures 1-2 comprises a packing box body 1, wherein a testing valve rod 2 is movably connected to the middle of the packing box body 1, a driving block 3 is fixedly connected to the top of the testing valve rod 2, a gland 4 is movably connected to the surface of the testing valve rod 2, the gland 4 is fixedly connected to the top of the packing box body 1 through a bolt, a packing 5 is movably connected to the bottom of the gland 4, the packing 5 is movably connected to the inside of the packing box body 1, a pneumatic cavity 6 is formed in the packing box body 1, and a testing assembly 7 is movably arranged at the bottom of the inner wall of the pneumatic cavity 6;
the surface of the driving block 3 is provided with a torsion sensor 8, the interior of the packing 5 is provided with a pressure sensor 9, and the interior of the air pressure cavity 6 is provided with a first air pressure sensor 10.
The implementation mode is specifically as follows: when using, fix gland 4 at the top of the packing letter body 1 through the bolt, and press 5 inside at the packing letter body 1 through gland 4, and place test component 7 in the bottom of atmospheric pressure chamber 6, rotate through driving drive block 3 during the test, and can show the torsion numerical value of drive block 3 on torque sensor 8, drive test valve rod 2 through drive block 3 and rotate, and make test component 7 carry out air pressurization to the inside of atmospheric pressure chamber 6, learn the inside pressure of packing 5 through the numerical value of observing pressure sensor 9, and learn the pressure of the inside air in atmospheric pressure chamber 6 through the numerical value of observing first atmospheric pressure sensor 10, thereby reachd the test result.
According to the valve rod packing testing device shown in fig. 1-5, the testing component 7 comprises a testing head 11, a sealing gasket 12 is fixedly connected to the surface of the testing head 11, the surfaces of the testing head 11 and the sealing gasket 12 are movably connected to the inner wall of the air pressure cavity 6, a rotating disc 13 is fixedly connected to the surface of the testing head 11, a sealing tube 14 is fixedly connected to the top of the rotating disc 13, a sealing ring 16 is fixedly connected to the top of the sealing tube 14, a sealing groove 17 is formed in the bottom of the packing box body 1, the inner wall of the sealing groove 17 is movably connected to the top of the sealing ring 16, an extruding ring 18 is movably connected to the top of the inner wall of the sealing ring 16, a telescopic rod 19 is fixedly connected to the bottom of the extruding ring 18, the telescopic rod 19 is fixedly connected to the top of the sealing tube 14, a connector 20 is fixedly connected to the bottom of the testing head 11, and, the surface of the connector 20 is fixedly connected with a bearing 21, the surface of the bearing 21 is fixedly connected with a rotating rod 23, one end of the rotating rod 23 is fixedly connected with an electric push rod 24, the top of the electric push rod 24 is fixedly connected with a clamping plate 25, and the middle of the rotating rod 23 is hinged with a double-end push rod 26;
the size of the sealing groove 17 is matched with that of the sealing ring 16, and a damping spring is fixedly connected to the surface of the telescopic rod 19;
the top of the rotating disc 13 is fixedly connected with a second air pressure sensor 15;
the number of the bearings 21 and the number of the rotating rods 23 are two, and the two rotating rods 23 are arranged in a mutually crossed manner;
two ends of the double-end push rod 26 are respectively hinged with the opposite middle parts of the two rotating rods 23;
the surface of the sealing gasket 12 is tightly attached to the surface of the test head 11 and the inner wall of the air pressure cavity 6 respectively;
the number of the electric push rods 24 is four, and the four electric push rods 24 are respectively and fixedly connected to two ends of the two rotating rods 23.
The implementation mode is specifically as follows: by inserting the test head 11 into the air pressure chamber 6, and by using the sealing gasket 12 to seal between the test head 11 and the air pressure chamber 6, the air is prevented from escaping from the air pressure chamber 6 to affect the reading, at this time, the sealing ring 16 is located on the inner wall of the sealing groove 17, the two rotating rods 23 are driven to approach each other by the power-on operation of the double-head push rod 26, and the electric push rod 24 is made to cling to the surface of the stuffing box 1, the stuffing box 1 is clamped by the power-on contraction of the electric push rod 24, so as to achieve the purpose of firmly fixing the rotating disc 13 and the stuffing box 1, and by contracting the telescopic rod 19, the sealing ring 16 is squeezed to cling to the sealing groove 17, so as to achieve the sealing effect at the joint of the sealing ring 16 and the sealing groove 17, the internal air pressure of the rotating disc 13 can be detected by the second air pressure sensor 15, the air supply is supplied through the test tube 22 and the interior of the air pressure chamber 6 is pressurized, and it is observed whether the reading of the second air pressure sensor 15 changes, thereby determining whether there is an air leakage phenomenon in the air pressure chamber 6 at the test head 11.
The utility model discloses the theory of operation:
referring to the attached drawings 1-2 of the specification, the driving block 3 is driven to rotate, so that the driving block 3 drives the testing valve rod 2 to rotate in the stuffing box body 1, the testing component 7 pressurizes the air in the air pressure cavity 6, and the readings of the torque sensor 8, the pressure sensor 9 and the first air pressure sensor 10 are observed, so that the testing work can be completed;
referring to the attached drawings 1-5 of the specification, the joint between the test head 11 and the air pressure cavity 6 is sealed through the sealing gasket 12, the sealing ring 16 is matched with the sealing groove 17, so that the sealing can be carried out in the rotating disc 13, whether the reading of the second air pressure sensor 15 changes or not is observed during testing, if the value of the second air pressure sensor 15 changes, the value is inaccurate, and the re-testing is needed, so that the aim of accurate test result can be fulfilled.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a valve rod packing testing arrangement, includes packing box body (1), its characterized in that: the middle part of the stuffing box body (1) is movably connected with a test valve rod (2), the top of the test valve rod (2) is fixedly connected with a driving block (3), the surface of the test valve rod (2) is movably connected with a gland (4), the gland (4) is fixedly connected to the top of the stuffing box body (1) through bolts, the bottom of the gland (4) is movably connected with a filler (5), the filler (5) is movably connected to the inside of the stuffing box body (1), an air pressure cavity (6) is formed in the stuffing box body (1), and a test component (7) is movably arranged at the bottom of the inner wall of the air pressure cavity (6);
the testing assembly (7) comprises a testing head (11), wherein a sealing gasket (12) is fixedly connected to the surface of the testing head (11), the testing head (11) and the sealing gasket (12) are movably connected to the inner wall of the air pressure cavity (6) in surface, a rotating disc (13) is fixedly connected to the surface of the testing head (11), a sealing tube (14) is fixedly connected to the top of the rotating disc (13), a sealing ring (16) is fixedly connected to the top of the sealing tube (14), a sealing groove (17) is formed in the bottom of the stuffing box body (1), the inner wall of the sealing groove (17) is movably connected to the top of the sealing ring (16), an extruding ring (18) is movably connected to the top of the inner wall of the sealing ring (16), a telescopic rod (19) is fixedly connected to the bottom of the extruding ring (18), and the telescopic rod (19) is fixedly connected to the top of the sealing tube, the bottom fixedly connected with connector (20) of test head (11), the bottom fixedly connected with test tube (22) of connector (20), the fixed surface of connector (20) is connected with bearing (21), and the fixed surface of bearing (21) is connected with dwang (23), the one end fixedly connected with electric putter (24) of dwang (23), and the top fixedly connected with splint (25) of electric putter (24), the middle part of dwang (23) articulates there is double-end push rod (26).
2. A valve stem packing test apparatus as defined in claim 1, wherein: the surface of the driving block (3) is provided with a torsion sensor (8), the inside of the filler (5) is provided with a pressure sensor (9), and the inside of the air pressure cavity (6) is provided with a first air pressure sensor (10).
3. A valve stem packing test apparatus as defined in claim 1, wherein: the size of the sealing groove (17) is matched with that of the sealing ring (16), and a damping spring is fixedly connected to the surface of the telescopic rod (19).
4. A valve stem packing test apparatus as defined in claim 1, wherein: the top of the rotating disc (13) is fixedly connected with a second air pressure sensor (15).
5. A valve stem packing test apparatus as defined in claim 1, wherein: the number of the bearings (21) and the rotating rods (23) is two, and the two rotating rods (23) are arranged in a mutually crossed mode.
6. A valve stem packing test apparatus as defined in claim 1, wherein: the two ends of the double-end push rod (26) are respectively hinged with the middle parts of the two rotating rods (23) opposite to each other.
7. A valve stem packing test apparatus as defined in claim 1, wherein: the surface of the sealing gasket (12) is tightly attached to the surface of the testing head (11) and the inner wall of the air pressure cavity (6) respectively.
8. A valve stem packing test apparatus as defined in claim 1, wherein: the number of the electric push rods (24) is four, and the four electric push rods (24) are respectively and fixedly connected to two ends of the two rotating rods (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920983373.3U CN209927385U (en) | 2019-06-27 | 2019-06-27 | Valve rod packing testing arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920983373.3U CN209927385U (en) | 2019-06-27 | 2019-06-27 | Valve rod packing testing arrangement |
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| Publication Number | Publication Date |
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| CN209927385U true CN209927385U (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920983373.3U Active CN209927385U (en) | 2019-06-27 | 2019-06-27 | Valve rod packing testing arrangement |
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| CN (1) | CN209927385U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112254895A (en) * | 2020-09-08 | 2021-01-22 | 合肥通用机械研究院有限公司 | A performance test device and test method for a packing sealing system for a straight stroke valve stem |
| CN112254896A (en) * | 2020-09-08 | 2021-01-22 | 合肥通用机械研究院有限公司 | Performance test device and test method for filler sealing system for angular travel valve rod |
-
2019
- 2019-06-27 CN CN201920983373.3U patent/CN209927385U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112254895A (en) * | 2020-09-08 | 2021-01-22 | 合肥通用机械研究院有限公司 | A performance test device and test method for a packing sealing system for a straight stroke valve stem |
| CN112254896A (en) * | 2020-09-08 | 2021-01-22 | 合肥通用机械研究院有限公司 | Performance test device and test method for filler sealing system for angular travel valve rod |
| CN112254896B (en) * | 2020-09-08 | 2023-12-05 | 合肥通用机械研究院有限公司 | A performance testing device and testing method for a packing sealing system for quarter-turn valve stems |
| CN112254895B (en) * | 2020-09-08 | 2023-12-05 | 合肥通用机械研究院有限公司 | Performance test device and test method for packing sealing system for straight Cheng Fagan |
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