CN220437760U - Hydraulic test tool for high-pressure cylinder of steam turbine - Google Patents
Hydraulic test tool for high-pressure cylinder of steam turbine Download PDFInfo
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- CN220437760U CN220437760U CN202321704633.1U CN202321704633U CN220437760U CN 220437760 U CN220437760 U CN 220437760U CN 202321704633 U CN202321704633 U CN 202321704633U CN 220437760 U CN220437760 U CN 220437760U
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- plate
- pressure cylinder
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- 230000000903 blocking effect Effects 0.000 claims abstract description 94
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 11
- 230000002706 hydrostatic effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model discloses a hydraulic test tool for a high-pressure cylinder of a steam turbine, which comprises four groups of blocking plates, wherein edges of the four groups of blocking plates are embedded on the inner wall of an inner cavity, and the inner cavity between the four groups of blocking plates is divided into three groups of independent cavities; the inner wall of each group of chambers is communicated with a water inlet channel and a pressure measuring channel for detecting water pressure; the inner cavity is provided with a first end and a second end which are opposite in the axial direction, wherein a blocking plate closest to the first end of the inner cavity is blocked at the end part of the inner cavity, and a plurality of ejector rods propped against the adjacent blocking plate are arranged on the blocking plate; the blocking plate closest to the second end of the inner cavity is provided with a plurality of pull rods connected to the adjacent blocking plate, and the blocking plate closest to the second end of the inner cavity is also provided with a plurality of pressing plates pressed against the outer wall of the high-pressure cylinder; the hydraulic test tool for the high-pressure cylinder of the steam turbine ensures the independent tightness of each chamber, simultaneously meets the requirements of different pressure tests of multiple chambers, and has reasonable structure and good safety performance.
Description
Technical Field
The utility model relates to the field of cylinder body high pressure detection, in particular to a hydraulic pressure test tool for a high-pressure cylinder of a steam turbine.
Background
The cylinder of the turbine is generally manufactured into horizontal split type, namely, the turbine consists of an upper cylinder and a lower cylinder which are welded in a closed mode, a high-pressure cylinder, a medium-pressure cylinder and a low-pressure cylinder are respectively arranged on the high-power turbine according to the working characteristics, and the high-pressure cylinder is mainly manufactured in a casting, machining and welding mode, so that the manufacturing quality of the high-pressure cylinder is ensured, and a hydrostatic test is needed after the manufacturing is completed.
Compared with a middle pressure cylinder and a low pressure cylinder, the high pressure cylinder has smaller structural size, so that the blocking plate can adopt a whole plate structure; in addition, the test pressures of different areas of the high-pressure cylinder are different, and the cylinder body is required to be divided into a plurality of areas for hydraulic test; in view of the foregoing, it is desirable to provide a hydraulic test fixture for a high-pressure cylinder of a steam turbine, which can perform hydraulic tests on different areas of the high-pressure cylinder.
Disclosure of Invention
The utility model aims to overcome the defects of the background technology and provides a hydraulic pressure test tool for a high-pressure cylinder of a steam turbine.
The embodiment of the utility model is realized by the following technical scheme:
a hydraulic test tool for a high-pressure cylinder of a steam turbine comprises four groups of blocking plates which are arranged in an inner cavity of the high-pressure cylinder at intervals along the axial direction of the inner cavity, wherein the edges of each group of blocking plates are embedded on the inner wall of the inner cavity so as to divide the inner cavity between the four groups of blocking plates into three groups of independent cavities; the inner wall of each group of the chambers is communicated with a water inlet channel and a pressure measuring channel for detecting water pressure;
the inner cavity is provided with a first end and a second end which are opposite in the axial direction, wherein the blocking plate closest to the first end of the inner cavity is blocked at the end part of the inner cavity, and a plurality of ejector rods propped against the blocking plate at the adjacent side are arranged on the blocking plate; the blocking plate closest to the second end of the inner cavity is provided with a plurality of pull rods connected to the blocking plate on the adjacent side, and the blocking plate closest to the second end of the inner cavity is also provided with a plurality of pressing plates pressed against the outer wall of the high-pressure cylinder.
Further, four groups of annular baffle grooves are formed in the inner wall of the inner cavity, and a group of blocking plates are embedded in each group of baffle grooves; a sealing rope is arranged between the blocking plate and the partition plate groove.
Further, along the direction from the first end to the second end of the inner cavity, the four groups of blocking plates comprise a first blocking plate, a second blocking plate, a third blocking plate and a fourth blocking plate which are sequentially arranged;
and a group of step surfaces which are propped against the side wall at one side of the baffle plate groove are arranged on the side wall of each group of the baffle plates, and sealing ropes positioned on the first baffle plate, the second baffle plate and the third baffle plate are embedded between the step surfaces and the side wall of the baffle plate groove.
Further, the first blocking plate is connected with the second blocking plate through the ejector rod, and the step surface arranged on the first blocking plate and the step surface arranged on the second blocking plate are both positioned on the back sides of the opposite surfaces of the first blocking plate and the second blocking plate.
Further, the third blocking plate and the fourth blocking plate are connected through the pull rod, and the step surface of the third blocking plate and the step surface of the fourth blocking plate are oppositely arranged.
Further, the sealing rope arranged on the fourth plugging plate is embedded on the back side of the opposite surface of the fourth plugging plate.
Further, the diameters of the two ends of each group of the blocking plates are unequal along the axial direction of the inner cavity, and the blocking plates comprise a small-diameter section positioned at one end of the blocking plate and a large-diameter section positioned at the other end of the blocking plate, so that the step surface positioned between the small-diameter section and the large-diameter section is formed on the side wall of the blocking plate; and the width of the baffle plate groove is larger than the thickness of the large-diameter section of the blocking plate along the axial direction of the inner cavity.
Further, the pull rod and the ejector rod are threaded rods.
Further, the pressing plate is fixed on the fourth plugging plate through a fastening bolt.
The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:
according to the hydraulic test tool for the high-pressure cylinder of the steam turbine, the inner cavity of the high-pressure cylinder is axially provided with the plurality of blocking plates at intervals, so that the inner cavity is divided into the plurality of independent pressure measuring areas, and the independent tightness of each cavity is ensured; meanwhile, by combining the self structural characteristics of the inside of the high-pressure cylinder, the connection and fixation between the blocking plates are realized by two connection modes of the sampling pull rod and the push rod, the requirement that different pressure tests are simultaneously carried out in a plurality of chambers is realized, the structure is reasonable, and the safety performance is good.
Drawings
FIG. 1 is a schematic diagram showing the assembly relationship between a hydraulic pressure experiment tool and an inner cavity of a high pressure cylinder;
FIG. 2 is a schematic diagram of a connection relationship between a fourth blanking plate and a pressing plate according to the present utility model;
fig. 3 is an enlarged view of a portion a in fig. 1;
icon: 1-chamber, 10-first chamber, 11-second chamber, 12-third chamber, 13-water inlet channel, 14-pressure measuring channel, 15-ejector rod, 16-pull rod, 17-pressing plate, 18-baffle groove, 19-sealing rope, 2-blocking plate, 2 a-small diameter section, 2 b-large diameter section, 2 c-step surface, 20-first blocking plate, 21-second blocking plate, 22-third blocking plate and 23-fourth blocking plate.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Referring to fig. 1 to 3, the utility model discloses a hydraulic test fixture for a high-pressure cylinder of a steam turbine, which comprises four groups of blocking plates 2, wherein the four groups of blocking plates 2 are arranged in an inner cavity along the axial direction of the inner cavity of the high-pressure cylinder at intervals, each group of blocking plates 2 is disc-shaped, four groups of baffle grooves 18 are arranged on the inner wall of the inner cavity of the high-pressure cylinder at intervals along the axial direction, the edges of each group of blocking plates 2 are embedded and installed in the baffle grooves 18, and the blocking plates 2 and the baffle grooves 18 are sealed through sealing ropes 19.
Referring to fig. 1, the inner cavity between the four groups of closure plates 2 can be divided into three groups of independent chambers 1 by the four groups of closure plates 2, specifically, the four groups of closure plates 2 comprise a first closure plate 20, a second closure plate 21, a third closure plate 22 and a fourth closure plate 23 which are sequentially arranged along the first end to the second end in the axial direction of the inner cavity, a first chamber 10 is formed between the first closure plate 20 and the second closure plate 21, a second chamber 11 is formed between the second closure plate 21 and the third closure plate 22, and a third chamber 12 is formed between the third closure plate 22 and the fourth closure plate 23.
Referring to fig. 1, the inner walls of each group of chambers 1 are respectively communicated with a water inlet channel 13 and a pressure measuring channel 14 for detecting water pressure, wherein the water inlet channels 13 are used for injecting water into the chambers 1, and the pressure measuring channels 14 are used for discharging air in the chambers 1 and installing pressure measuring instruments.
Referring to fig. 1, the first closure plate 20 is closest to the first end of the inner cavity, the first closure plate 20 is blocked on the left end face of the inner cavity, the first closure plate 20 is provided with a plurality of groups of ejector rods 15, and the other end of each group of ejector rods 15 is abutted against a second closure plate 21 adjacent to the first closure plate 20; the fourth blocking plate 23 is closest to the second end of the inner cavity, a plurality of groups of pull rods 16 are arranged on the fourth blocking plate 23, the other end of each group of pull rods 16 is connected in a blind hole on the third blocking plate 22 through threads, and a plurality of groups of pressing plates 17 pressed against the outer wall of the high-pressure cylinder are further arranged on the fourth blocking plate 21.
Referring to fig. 2, in the present embodiment, two sets of pressing plates 17 are mounted on the fourth closure plate 23 by fastening bolts, and the two sets of pressing plates 17 are pressed against the outer wall of the right end of the high pressure cylinder.
Referring to fig. 1, in the above embodiment, the tie rod 16 and the ejector rod 15 are both of threaded rod structure, and a sealing rope 19 is disposed between each set of closure plates 2 and the partition plate groove 18, specifically: by screwing and adjusting the ejector rod 15 on the first plugging plate 20, the other end of the ejector rod 15 can be abutted against the second plugging plate 21, so that the second plugging plate 21 is pressed against the right side wall of the partition plate groove 18, and the first plugging plate 20 can be abutted against the left side wall of the partition plate groove 18 by the same reaction force, therefore, the sealing rope 19 is arranged on the left side surface of the first plugging plate 20 and the right side surface of the second plugging plate 21; similarly, by screwing the pull rod 16 on the fourth closure plate 20, the other end of the pull rod 16 drives the third closure plate 22 to move toward the fourth closure plate 23, the distance between the third closure plate 22 and the fourth closure plate 23 is contracted, the third closure plate 22 is pressed against the right side wall of the partition wall groove 18, and by screwing the fastening bolt on the fourth closure plate 23, the fourth closure plate 23 is pressed against the right side wall of the partition wall groove 18, so that the sealing rope 19 is arranged on the right side surface of the third closure plate 22 and the right side surface of the fourth closure plate 23.
Referring to fig. 1, in one embodiment, in the axial direction of the inner cavity of the high pressure cylinder, the diameters of both ends of each group of the closure plates 2 are unequal, and the stepped shaft structure comprises a small diameter section 2a positioned at one end of the closure plate 2 and a large diameter section 2b positioned at the other end of the closure plate 2, so that a step surface 2c positioned between the small diameter section 2a and the large diameter section 2b is formed on the side wall of the closure plate 2, wherein the large diameter section 2b of the closure plate 2 is embedded in the partition plate groove 18, and when in use, the step surface 2c is abutted against the inner wall of the partition plate groove 18, and therefore, the sealing ropes 19 positioned on the first closure plate 20, the second closure plate 21 and the third closure plate 22 are sealed between the step surface 2c and the side wall of the partition plate groove 18.
Referring to fig. 1, the step surface 2c on the first closure plate 20 and the step surface 2c on the second closure plate 21 are both located on the back side of the opposite surface between the first closure plate 20 and the second closure plate 21, and the distance between the first closure plate 20 and the second closure plate 21 can be increased by screwing and adjusting the ejector rod 15, and the step surface 2c on the first closure plate 20 and the step surface 2c on the second closure plate 21 can be tightly connected with the partition groove 18 through the sealing rope 19.
Referring to fig. 1, since the third closure plate 22 and the fourth closure plate 23 are connected by the tie rod 16, the third closure plate 22 is contracted toward the fourth closure plate 23 by screwing the adjustment plunger 15, and therefore the stepped surface 2c of the third closure plate 22 faces the fourth closure plate 23, and the stepped surface 2c of the third closure plate 22 can be tightly connected to the separator groove 18 by the seal string 19 during the movement of the third closure plate 22 toward the fourth closure plate 23.
Referring to fig. 1, the stepped surface 2c of the third closure plate 22 and the stepped surface 2c of the fourth closure plate 23 are disposed opposite to each other, and when the fastening bolt on the pressure plate 17 is tightened, the back side of the stepped surface 2c of the fourth closure plate 23 is folded toward the side wall of the separator groove 18, and therefore, the seal rope 19 on the fourth closure plate 23 is disposed on the back side of the opposite surface of the fourth closure plate 23.
In addition, in one embodiment, referring to fig. 1, the width H of the baffle groove 18 is greater than the thickness of the large-diameter section 2b of the baffle plate 2 along the axial direction of the inner cavity, so that the baffle plate 2 can incline at a small angle in the baffle groove 18 during the cylinder combining process of the upper cylinder and the lower cylinder, and the edge of the baffle groove 18 on the upper cylinder is prevented from damaging or cutting off the sealing rope 19.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. The hydraulic test tooling for the high-pressure cylinder of the steam turbine is characterized by comprising four groups of blocking plates (2) which are arranged in an inner cavity of the high-pressure cylinder at intervals along the axial direction of the inner cavity, wherein the edges of each group of blocking plates (2) are embedded on the inner wall of the inner cavity so as to divide the inner cavity between the four groups of blocking plates (2) into three groups of independent chambers (1); the inner wall of each group of the chambers (1) is communicated with a water inlet channel (13) and a pressure measuring channel (14) for detecting water pressure;
the inner cavity is provided with a first end and a second end which are opposite in the axial direction, wherein the blocking plate (2) closest to the first end of the inner cavity is blocked at the end part of the inner cavity, and a plurality of ejector rods (15) propped against the blocking plate (2) at the adjacent side are arranged on the blocking plate; the blocking plate (2) closest to the second end of the inner cavity is provided with a plurality of pull rods (16) connected to the blocking plate (2) on the adjacent side, and the blocking plate (2) closest to the second end of the inner cavity is also provided with a plurality of pressing plates (17) pressed against the outer wall of the high-pressure cylinder.
2. The hydraulic pressure test fixture for the high-pressure cylinder of the steam turbine according to claim 1, wherein four groups of annular baffle grooves (18) are formed in the inner wall of the inner cavity, and each group of baffle grooves (18) is internally embedded with one group of blocking plates (2); a sealing rope (19) is arranged between the blocking plate (2) and the partition plate groove (18).
3. The hydraulic pressure test fixture for a high-pressure cylinder of a steam turbine according to claim 2, wherein the four groups of the blocking plates (2) comprise a first blocking plate (20), a second blocking plate (21), a third blocking plate (22) and a fourth blocking plate (23) which are sequentially arranged along the direction from the first end to the second end of the inner cavity;
each group of the side walls of the blocking plates (2) are provided with a group of step surfaces (2 c) which are propped against the side wall of one side of the baffle plate groove (18), and sealing ropes (19) which are positioned on the first blocking plate (20), the second blocking plate (21) and the third blocking plate (22) are embedded between the step surfaces (2 c) and the side wall of the baffle plate groove (18).
4. The hydraulic pressure test fixture for a high-pressure cylinder of a steam turbine according to claim 3, wherein the first blocking plate (20) and the second blocking plate (21) are connected through the ejector rod, and the step surface (2 c) arranged on the first blocking plate (20) and the step surface (2 c) arranged on the second blocking plate (21) are both positioned on the back sides of the opposite surfaces of the first blocking plate (20) and the second blocking plate (21).
5. The hydraulic pressure test fixture for a high-pressure cylinder of a steam turbine according to claim 3 or 4, wherein the third blocking plate (22) and the fourth blocking plate (23) are connected through the pull rod (16), and the step surface (2 c) of the third blocking plate (22) and the step surface (2 c) of the fourth blocking plate (23) are oppositely arranged.
6. The hydraulic pressure test fixture for a high-pressure cylinder of a steam turbine according to claim 5, wherein the sealing rope (19) arranged on the fourth blocking plate (23) is embedded on the back side of the opposite surface of the fourth blocking plate (23).
7. The hydraulic pressure test fixture for a high-pressure cylinder of a steam turbine according to any one of claims 1 to 4, wherein the diameters of both ends of each group of the blocking plates (2) are unequal along the axial direction of the inner cavity, and the hydraulic pressure test fixture comprises a small-diameter section (2 a) positioned at one end of the blocking plate (2) and a large-diameter section (2 b) positioned at the other end of the blocking plate (2), so that a step surface (2 c) positioned between the small-diameter section (2 a) and the large-diameter section (2 b) is formed on the side wall of the blocking plate (2); the width of the baffle groove (18) is larger than the thickness of the large-diameter section (2 b) of the blocking plate (2) along the axial direction of the inner cavity.
8. The hydraulic test fixture for the high-pressure cylinder of the steam turbine, as set forth in any one of claims 1 to 4, is characterized in that the pull rod (16) and the ejector rod (15) are threaded rods.
9. The turbine high pressure cylinder hydrostatic test tooling of claim 3 or 4, wherein: the pressing plate (17) is fixed on the fourth plugging plate (23) through a fastening bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321704633.1U CN220437760U (en) | 2023-06-30 | 2023-06-30 | Hydraulic test tool for high-pressure cylinder of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321704633.1U CN220437760U (en) | 2023-06-30 | 2023-06-30 | Hydraulic test tool for high-pressure cylinder of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220437760U true CN220437760U (en) | 2024-02-02 |
Family
ID=89694414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321704633.1U Active CN220437760U (en) | 2023-06-30 | 2023-06-30 | Hydraulic test tool for high-pressure cylinder of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220437760U (en) |
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2023
- 2023-06-30 CN CN202321704633.1U patent/CN220437760U/en active Active
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