CN113389907A - Valve seat pressing tool and method based on high/low pressure bypass valve - Google Patents
Valve seat pressing tool and method based on high/low pressure bypass valve Download PDFInfo
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- CN113389907A CN113389907A CN202110801260.9A CN202110801260A CN113389907A CN 113389907 A CN113389907 A CN 113389907A CN 202110801260 A CN202110801260 A CN 202110801260A CN 113389907 A CN113389907 A CN 113389907A
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- valve seat
- valve
- pressing
- tool
- low pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
- F16K1/427—Attachment of the seat to the housing by one or more additional fixing elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
A valve seat pressing tool and a method based on a high/low pressure bypass valve belong to the field of bypass valve assembly. The invention solves the problems that the traditional winding gasket of the high/low pressure bypass valve needs larger pressing force when being pressed, and the valve seat is not pressed in place when being assembled, so that the sealing effect of the valve is poor and leakage is generated. The invention comprises a valve seat gland, an adjusting sleeve, a pressing rod and a pressing seal cover, wherein a winding washer and a valve seat are sequentially arranged in a valve body, the valve seat gland is matched with the adjusting sleeve and presses the valve seat in the valve body, the bottom of the pressing rod is connected with the valve seat, the top of the pressing rod is connected with the pressing seal cover, and the pressing seal cover is matched with the valve body through a stud and a nut. The valve seat pressing tool and the method enable the valve body, the winding gasket and the valve seat to be tightly attached, and good sealing performance is achieved.
Description
Technical Field
The invention relates to a valve seat pressing tool and a pressing method of a bypass valve, and belongs to the field of assembly of bypass valves.
Background
The high/low pressure bypass valve is a valve for protecting a steam engine, a winding gasket is arranged between a valve body and a valve seat of the high/low pressure bypass valve, the valve body and the valve seat are in a free and uncompressed state through compression fit, and therefore the valve seat needs to be compressed by screwing a valve seat gland to be in a vertical and downward stress state and then indirectly compress the winding gasket, and the winding gasket generates a certain compression amount. However, the wound gasket of the high/low pressure bypass valve needs a larger pressing force when being pressed, and meanwhile, the internal structure of the high pressure bypass valve is complicated, and the valve seat is often assembled, so that the wound gasket cannot achieve the required compression amount, the sealing effect of the valve is poor, and leakage is easily generated.
In view of the foregoing, there is a need for a seat pressing tool and seat pressing method for a bypass valve that addresses the above-mentioned problems.
Disclosure of Invention
The invention solves the problems that the sealing effect of the valve is poor and leakage is caused because a winding gasket of the traditional high/low pressure bypass valve needs larger pressing force when being pressed and the valve seat is not pressed in place when being assembled, and further discloses a valve seat pressing tool and a method based on the high/low pressure bypass valve. The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention.
The technical scheme of the invention is as follows:
the utility model provides a disk seat compresses tightly instrument based on high/low pressure bypass valve, includes disk seat gland, adjusting sleeve, compressing tightly the pole and compresses tightly the closing cap, and winding packing ring, disk seat are packed into in the valve body in proper order, and disk seat gland and adjusting sleeve cooperation installation compress tightly the disk seat in the valve body, compress tightly on the pole bottom is connected the disk seat, compress tightly the closing cap in the connection of compressing tightly the pole top, compress tightly the closing cap and pass through double-screw bolt and nut and valve body cooperation installation.
Furthermore, the adjusting sleeve and the valve seat gland are installed in a concave-convex structure in a matched mode.
Furthermore, the bottom surface of the adjusting sleeve is provided with a protrusion, the valve seat gland is provided with a groove corresponding to the protrusion, and the protrusion of the adjusting sleeve is matched with the groove of the valve seat gland for installation.
Further, a mounting groove is machined in the adjusting sleeve, the valve seat gland is of a locking ring structure, an installation block is arranged at the notch of the valve seat gland, the installation block is installed in a matched mode with a screw to lock the valve seat gland, and the mounting groove of the adjusting sleeve is installed in a matched mode with the installation block.
Furthermore, the screw is a socket head cap screw.
Furthermore, a plurality of through holes are arrayed on the side wall of the adjusting sleeve.
Further, the stud is a stud.
A valve seat pressing method based on a high/low pressure bypass valve comprises the following steps:
the method comprises the following steps: sequentially installing the winding gasket and the valve seat into the valve body;
step two: screwing the valve seat gland into the valve body through the adjusting sleeve to tightly press the valve seat, and screwing the adjusting sleeve to an incompressible state;
step three: sequentially assembling a pressing rod, a stud, a pressing cover and a nut above the valve seat;
step four: the pressing sealing cover and the pressing rod are driven to move downwards by screwing the nut, the winding gasket is indirectly pressed after the valve seat is in a vertical downward stress state, then the winding gasket is compressed, a certain compression amount is generated by the winding gasket, the displacement variation between the pressing sealing cover and the valve body is measured by using a caliper to adjust the displacement distance h of the pressing sealing cover, wherein h is the compression amount of the winding gasket, and then the valve body, the winding gasket and the valve seat are tightly attached to generate good sealing performance;
step five: the long rod is inserted into the through hole of the adjusting sleeve, the adjusting sleeve is rotated through the long rod, the valve seat gland moves downwards, the adjusting sleeve stops rotating when the displacement of the valve seat gland is equal to the displacement of the pressing sealing cover, the nut, the pressing sealing cover and the pressing rod are taken down, the screw on the mounting block is taken out, the valve seat gland expands in the valve body, and finally the valve seat is assembled.
The invention has the beneficial effects that:
1. according to the valve seat pressing tool and the method based on the high/low pressure bypass valve, the valve seat is completely pressed in the valve body by the valve seat pressing cover and the pressing rod under the double actions of the nut and the adjusting sleeve, so that the valve body, the winding gasket and the valve seat are tightly attached, good sealing performance is generated, and valve leakage is avoided;
2. the valve seat gland is connected with the adjusting sleeve in a matched mounting mode through the protrusions and the grooves, the valve seat gland is installed in a matched mounting mode through the mounting block and the mounting groove and is fixed through the screws, the valve seat gland is connected with the adjusting sleeve more stably, and the adjusting sleeve is screwed to drive the valve seat gland to move downwards to compress the winding gasket.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a high/low pressure bypass valve based valve seat pressing tool;
FIG. 2 is a schematic view of an adjustment sleeve;
FIG. 3 is a view from the direction A of FIG. 2;
FIG. 4 is a front view of the valve seat gland;
fig. 5 is a top view of the valve seat gland.
In the figure, 1-a valve body, 2-a winding gasket, 3-a valve seat, 4-a valve seat gland, 5-an adjusting sleeve, 6-a pressing rod, 7-a pressing cover, 8-a nut, 9-a stud, 10-a screw, 11-a through hole, 12-a bulge, 13-a mounting groove, 14-a groove and 15-a mounting block.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It should be understood that the description is intended to be exemplary, and not intended to limit the scope of the invention. In the following description, moreover, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 5, and the valve seat pressing tool based on the high/low pressure bypass valve of the embodiment comprises a valve seat pressing cover 4, an adjusting sleeve 5, a pressing rod 6 and a pressing sealing cover 7, wherein a winding washer 4 and a valve seat 3 are sequentially installed in a valve body 1, the valve seat pressing cover 4 and the adjusting sleeve 5 are installed in a matched manner and press the valve seat 3 in the valve body 1, the bottom of the pressing rod 6 is connected with the valve seat 3, the top of the pressing rod 6 is connected with the pressing sealing cover 7, the pressing sealing cover 7 is installed in a matched manner with the valve body 1 through a stud 9 and a nut 8, the winding washer 2 and the valve seat 3 are sequentially installed in the valve body 1, the valve seat pressing cover 4 is selected in the valve body 1 through the adjusting sleeve 5 and presses the valve seat 3, then the pressing rod 4, the pressing sealing cover 7, the stud 9 and the nut 8 are assembled, the stud 9 is a stud, so that the bottom of the pressing rod 4 presses the valve seat 3, firstly screwing the nut 8 to enable the pressing rod 4 to move downwards to press the valve seat 3 and the winding gasket 2, then screwing the adjusting sleeve 5 to enable the valve seat pressing cover 4 to continue moving downwards, further enabling the valve seat 3 and the winding gasket 2 to be tightly attached to the valve body 1, generating good sealing performance, and completing valve seat assembly of the bypass valve.
The second embodiment is as follows: the embodiment is described with reference to fig. 1 to 5, and the valve seat pressing tool based on the high/low pressure bypass valve of the embodiment is characterized in that the adjusting sleeve 5 and the valve seat gland 4 are installed in a concave-convex structure in a matching manner, a plurality of protrusions 12 are uniformly arrayed on the bottom surface of the adjusting sleeve 5 by taking the axis of the adjusting sleeve 5 as the center, a plurality of grooves 14 corresponding to the protrusions 12 are formed in the valve seat gland 4, the protrusions 12 of the adjusting sleeve 5 are installed in a matching manner with the grooves 14 of the valve seat gland 4, and the adjusting sleeve 5 and the valve seat gland 4 are connected in an inserting manner, so that the adjusting sleeve 5 and the valve seat gland 4 can be conveniently disassembled and assembled, and the adjusting sleeve 5 can better control the valve seat gland 4 to move up and down.
The third concrete implementation mode: the embodiment is described with reference to fig. 1 to 5, and the valve seat pressing tool based on the high/low pressure bypass valve of the embodiment is characterized in that an installation groove 13 is processed on the adjustment sleeve 5, the valve seat cover 4 is a locking ring structure, an installation block 15 is arranged at a gap of the valve seat cover 4, the installation block 15 is installed in cooperation with a screw 10 to lock the valve seat cover 4, the installation groove 13 of the adjustment sleeve 5 is installed in cooperation with the installation block 15, on the basis of the second embodiment, the valve seat cover 4 adopts a locking ring structure, when the valve seat cover 4 presses the valve seat 3 and the winding gasket 2, the screw 10 on the installation block 15 is removed, and the valve seat cover 4 expands in the valve body 1 to be completely fixed in the valve body, so that the sealing performance of the valve seat 3 and the winding gasket 2 is ensured.
The fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to 5, and the valve seat pressing tool based on the high/low pressure bypass valve of the embodiment has a plurality of through holes 11 arrayed on the side wall of the adjusting sleeve 5, and the upper end of the adjusting sleeve 5 is provided with uniformly distributed through holes of 12-8 mm, so that when the adjusting sleeve 5 is screwed, a long rod penetrates through the adjusting sleeve 5, thereby facilitating the screwing of the adjusting sleeve 5.
The fifth concrete implementation mode: the embodiment is described with reference to fig. 1 to 5, and the method for pressing the valve seat based on the high/low pressure bypass valve of the embodiment comprises the following steps:
the method comprises the following steps: sequentially installing the winding gasket 2 and the valve seat 3 into the valve body 1;
step two: screwing the valve seat gland 4 into the valve body 1 through the adjusting sleeve 5 to tightly press the valve seat 3, and screwing the adjusting sleeve 5 to an incompressible state;
step three: a pressing rod 6, a stud 9, a pressing cover 7 and a nut 8 are assembled above the valve seat 3 in sequence;
step four: the pressing sealing cover 7 and the pressing rod 6 are driven to move downwards by screwing the nut 8, the valve seat 3 is in a vertical downward stress state and then indirectly presses the winding gasket 2, the winding gasket 2 is further compressed, the winding gasket 2 generates a certain amount of compression, the displacement variation between the pressing sealing cover 7 and the valve body 1 is measured by a caliper so as to adjust the displacement distance h of the pressing sealing cover 7, wherein h is the amount of compression of the winding gasket 2, and the valve body 1, the winding gasket 2 and the valve seat 3 are further tightly attached to generate good sealing performance;
step five: the long rod is inserted into the through hole 11 of the adjusting sleeve 5, the adjusting sleeve 5 is rotated through the long rod, the valve seat gland 4 moves downwards, the adjusting sleeve 5 stops rotating when the displacement of the valve seat gland 4 is equal to that of the compression sealing cover 7, the nut 8, the compression sealing cover 7 and the compression rod 6 are taken down, the screw 10 on the mounting block 15 is taken out, the valve seat gland 4 is expanded in the valve body 1, and finally the valve seat 3 is assembled.
This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.
Claims (8)
1. A disk seat compresses tightly instrument based on high/low pressure bypass valve door which characterized in that: including disk seat gland (4), adjusting sleeve (5), compress tightly pole (6) and compress tightly closing cap (7), winding packing ring (4), disk seat (3) are packed into valve body (1) in proper order in, disk seat gland (4) and adjusting sleeve (5) cooperation are installed and are compressed tightly disk seat (3) in valve body (1), compress tightly on disk seat (3) is connected to pole (6) bottom, compress tightly closing cap (7) is connected at pole (6) top, compress tightly closing cap (7) and install through double-screw bolt (9) and nut (8) and valve body (1) cooperation.
2. The tool of claim 1, wherein the tool further comprises a valve seat compression tool based on a high/low pressure bypass valve, wherein the tool further comprises: the adjusting sleeve (5) and the valve seat gland (4) are installed in a matched mode through a concave-convex structure.
3. The tool of claim 2, wherein the tool further comprises a valve seat compression tool based on a high/low pressure bypass valve, wherein the tool further comprises: the bottom surface of the adjusting sleeve (5) is provided with a protrusion (12), the valve seat gland (4) is provided with a groove (14) corresponding to the protrusion (12), and the protrusion (12) of the adjusting sleeve (5) is matched with the groove (14) of the valve seat gland (4) for installation.
4. The tool of claim 3, wherein the tool further comprises a valve seat pressing tool based on a high/low pressure bypass valve, wherein the tool comprises: processing has mounting groove (13) on adjustment sleeve (5), disk seat gland (4) are the locking ring structure, and disk seat gland (4) breach department is provided with installation piece (15), and installation piece (15) and screw (10) cooperation installation are locked disk seat gland (4), and mounting groove (13) and installation piece (15) cooperation installation of adjustment sleeve (5).
5. The seat pressing tool based on the high/low pressure bypass valve according to claim 4, wherein: the screw (10) is an inner hexagonal socket head cap screw.
6. The tool for pressing a valve seat based on a high/low pressure bypass valve as claimed in claim 1 or 5, wherein: the side wall of the adjusting sleeve (5) is provided with a plurality of through holes (11) in an array mode.
7. The tool for pressing a valve seat based on a high/low pressure bypass valve as claimed in claim 1 or 5, wherein: the stud (9) is a double-end stud.
8. A valve seat pressing method based on a high/low pressure bypass valve is characterized by comprising the following steps:
the method comprises the following steps: sequentially installing the winding gasket (2) and the valve seat (3) into the valve body (1);
step two: screwing the valve seat gland (4) into the valve body (1) through the adjusting sleeve (5) to compress the valve seat (3), and screwing the adjusting sleeve (5) to an incompressible state;
step three: a pressing rod (6), a stud (9), a pressing sealing cover (7) and a nut (8) are assembled above the valve seat (3) in sequence;
step four: the pressing sealing cover (7) and the pressing rod (6) are driven to move downwards by screwing the nut (8), the valve seat (3) is in a vertical downward stress state and then indirectly presses the winding gasket (2), the winding gasket (2) is further compressed, the winding gasket (2) generates a certain compression amount, a caliper is used for measuring the displacement variation between the pressing sealing cover (7) and the valve body (1) to adjust the displacement distance h of the pressing sealing cover (7), the h is the compression amount of the winding gasket (2), and then the valve body (1), the winding gasket (2) and the valve seat (3) are tightly attached to generate good sealing performance;
step five: insert through a stock in through-hole (11) of adjustment sleeve (5), through stock rotation adjustment sleeve (5), make disk seat gland (4) downstream, it is equal with the displacement volume that compresses tightly closing cap (7) to rotate the displacement volume of disk seat gland (4), stop rotation adjustment sleeve (5), take off nut (8), compress tightly closing cap (7) and compression bar (6), take out screw (10) on installation piece (15), make disk seat gland (4) inflation in valve body (1), the assembly of final completion disk seat (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110801260.9A CN113389907A (en) | 2021-07-15 | 2021-07-15 | Valve seat pressing tool and method based on high/low pressure bypass valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110801260.9A CN113389907A (en) | 2021-07-15 | 2021-07-15 | Valve seat pressing tool and method based on high/low pressure bypass valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113389907A true CN113389907A (en) | 2021-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110801260.9A Pending CN113389907A (en) | 2021-07-15 | 2021-07-15 | Valve seat pressing tool and method based on high/low pressure bypass valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113389907A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635973A (en) * | 2022-03-18 | 2022-06-17 | 南方阀门科技有限公司 | Main steam high-temperature high-pressure valve seat-replaceable stop valve |
-
2021
- 2021-07-15 CN CN202110801260.9A patent/CN113389907A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635973A (en) * | 2022-03-18 | 2022-06-17 | 南方阀门科技有限公司 | Main steam high-temperature high-pressure valve seat-replaceable stop valve |
| CN114635973B (en) * | 2022-03-18 | 2023-09-12 | 南方阀门科技有限公司 | Main steam high-temperature high-pressure replaceable valve seat stop valve |
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