Device for accurately measuring scales of valve rod of pumped storage power plant valve
By designing a valve stem scale measuring device that supports the base and self-tightening mechanism, the problem that traditional tools cannot adapt to valve stems of different sizes is solved, and accurate measurement and high reliability of valve opening adjustment in pumped storage power stations are achieved.
Patent Information
- Application Number
- CN202411615980.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-01-10
AI Technical Summary
Traditional measurement tools cannot adapt to valve stems and pipelines of different sizes, resulting in difficulty in controlling accuracy when adjusting valve opening in pumped storage power stations and require regular re-measurement.
A valve stem scale measuring device including a support base, a positioning block and a self-tightening mechanism is designed. Through the locking of the support base and the valve pipe and the precise docking of the positioning block and the valve stem, the suitability for valves of different sizes is achieved and Measurement accuracy.
The device can be connected stably between valve and water pipes of different sizes, reduce shaking during installation, improve measurement reliability and accuracy, and has good applicability.
Smart Images
Figure CN119289834A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of valve stem scale measurement, in particular to a device for accurately measuring the scale of valve stems of pumped storage power plants. Background Art
[0002] In the operation and maintenance of pumped storage power stations, due to seasonal changes in cooling water temperature, the cooling water flow of each guide bearing needs to be adjusted continuously, and accurate control of valves is crucial. The scale measurement of the valve stem is an important basis for judging the valve opening degree and control accuracy. At present, the way to adjust the flow of each watt temperature of the unit is mostly to install a flow meter on the water pipeline, but the seasons are cyclical and the valve opening needs to be re-measured regularly. Traditional measurement tools may not be able to adapt to valve stems and pipes of different sizes and have poor applicability. Summary of the invention
[0003] In order to make up for the deficiencies of the prior art and solve at least one of the problems raised in the background technology, a device for accurately measuring the scale of valve stems of pumped storage power plants is proposed.
[0004] The technical solution adopted by the present invention to solve its technical problems is: the present invention is a device for accurately measuring the valve stem scale of a pumped storage power plant valve, comprising a detection mechanism installed on the valve pipeline and a positioning block installed on the valve stem bracket, the detection mechanism comprises a support base, the support base is provided with a bracket perpendicular to the support base, the middle of the bracket is provided with a screw rod parallel to the valve stem, one side of the screw rod is provided with a guide rod, the screw rod and the guide rod are provided with a screw rod seat, the screw rod seat is provided with a positioning ruler for locating the height of the valve stem, the bracket is provided with a scale corresponding to the positioning ruler, and the front side of the screw rod and the guide rod is provided with a positioning mechanism corresponding to the positioning block.
[0005] The aforementioned device for accurately measuring the scale of valve stems of pumped-storage power plants, the support base comprises an upper clamp, a lower clamp, a connecting seat for connecting the upper clamp and the lower clamp, and a locking seat for locking the upper clamp and the lower clamp, the locking seat comprises an upper fixing block respectively arranged at the end of the upper clamp and a lower fixing block arranged at the end of the lower clamp, a clamping block is arranged on the lower side of the upper fixing block, positioning holes are arranged on both sides of the clamping block, and a clamping groove corresponding to the clamping block is arranged in the lower fixing block.
[0006] The aforementioned device for accurately measuring the valve stem scale of a pumped storage power plant valve has a self-tightening mechanism provided in the axial middle part of the inner side of the upper clamp and the lower clamp, and one side of the self-tightening mechanism is provided with multiple groups of levers for locking the support base and the valve pipeline, and the end of the lever is provided with a radially arranged pressure block.
[0007] The aforementioned device for accurately measuring the valve stem scale of a pumped storage power plant valve, the self-tightening mechanism includes a telescopic rod installed on the upper clamp and the lower clamp and arranged radially, a spring is provided outside the telescopic rod, and the ends of the telescopic rod and the spring are provided with abutment blocks for abutting the valve pipeline.
[0008] The aforementioned device for accurately measuring the scale of valve stems of pumped storage power plants, wherein the positioning block includes an arc-shaped jacket, and a positioning groove is provided on the outer side of the arc-shaped jacket.
[0009] The aforementioned device for accurately measuring the valve stem scale of a pumped storage power plant valve, the positioning mechanism includes a bidirectional screw rod arranged on one side of the screw rod and the guide rod and arranged horizontally, the bidirectional screw rod is provided with a movable seat abutting against the inner bottom surface of the bracket, and the movable seat is provided with a positioning rod corresponding to the positioning groove.
[0010] The beneficial effects of the present invention are as follows:
[0011] 1. The device for accurately measuring the valve stem scale of a pumped-storage power plant valve described in the present invention facilitates the connection between the device and valve water pipes of different sizes by setting a support base. The setting of the self-tightening mechanism can reduce the shaking of the device during installation, and has good reliability.
[0012] 2. The device for accurately measuring the scale of valve stems of pumped-storage power plants described in the present invention facilitates positioning of the application by setting a positioning block and a positioning mechanism, so that the screw rod can be parallel to the valve stem, thereby improving the measurement effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The present invention will be further described below in conjunction with the accompanying drawings.
[0014] Figure 1 It is a schematic diagram of the structure of the present invention;
[0015] Figure 2 It is a structural schematic diagram of the support base of the present invention;
[0016] Figure 3 It is a structural schematic diagram of the positioning mechanism of the present invention.
[0017] Legend:
[0018] 1-support base, 2-bracket, 3-positioning block, 4-screw, 5-guide rod, 6-screw seat, 7-positioning ruler, 8-upper clamp, 9-lower clamp, 10-connecting seat, 11-locking seat, 12-rejection rod, 13-pressure block, 14-upper fixed block, 15-lower fixed block, 16-block, 17-positioning hole, 18-slot, 19-telescopic rod, 20-spring, 21-rejection block, 22-arc jacket, 23-positioning slot, 24-bidirectional screw, 25-movable seat, 26-positioning rod. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0020] Specific examples are given below.
[0021] like Figures 1 to 3 As shown, a device for accurately measuring the scale of valve stems of pumped storage power plants described in an embodiment of the present invention comprises a detection mechanism installed on the valve pipeline and a positioning block 3 installed on the valve stem bracket, wherein the detection mechanism comprises a support base 1, a bracket 2 perpendicular to the support base 1 is provided on the support base 1, a screw rod 4 parallel to the valve stem is provided in the middle of the bracket 2, a guide rod 5 is provided on one side of the screw rod 4, a screw rod seat 6 is provided on the screw rod 4 and the guide rod 5, a positioning ruler 7 for locating the height of the valve stem is provided on the screw rod seat 6, a scale corresponding to the positioning ruler 7 is provided in the bracket 2, and a positioning mechanism corresponding to the positioning block 3 is provided on the front side of the screw rod 4 and the guide rod 5.
[0022] The support base 1 includes an upper clamp 8, a lower clamp 9, a connecting seat 10 for connecting the upper clamp 8 and the lower clamp 9, and a locking seat 11 for locking the upper clamp 8 and the lower clamp 9. The locking seat 11 includes an upper fixing block 14 respectively arranged at the end of the upper clamp 8 and a lower fixing block 15 arranged at the end of the lower clamp 9. A clamping block 16 is provided on the lower side of the upper fixing block 14, and positioning holes 17 are provided on both sides of the clamping block 16. A clamping groove 18 corresponding to the clamping block 16 is provided in the lower fixing block 15.
[0023] A self-tightening mechanism is provided in the axial middle of the inner side of the upper clamp 8 and the lower clamp 9. One side of the self-tightening mechanism is provided with multiple groups of push rods 12 for locking the support base 1 and the valve pipeline. The ends of the push rods 12 are provided with radially arranged pressure blocks 13.
[0024] The self-tightening mechanism comprises a telescopic rod 19 mounted on the upper clamp 8 and the lower clamp 9 and arranged radially, a spring 20 is arranged outside the telescopic rod 19, and abutment blocks 21 for abutting against the valve pipeline are arranged at the ends of the telescopic rod 19 and the spring 20.
[0025] The positioning block 3 includes an arc-shaped jacket 22 , and a positioning groove 23 is provided on the outer side of the arc-shaped jacket 22 .
[0026] The positioning mechanism includes a bidirectional screw rod 24 arranged horizontally on one side of the screw rod 4 and the guide rod 5. The bidirectional screw rod 24 is provided with a moving seat 25 abutting against the inner bottom surface of the bracket 2. The moving seat 25 is provided with a positioning rod 26 corresponding to the positioning groove 23.
[0027] The principle of the present application is that the present application is installed through the support base 1. During installation, the upper clamp 8 and the lower clamp 9 are rotated around the connecting seat 10 to open the support base 1. Then, after the upper clamp 8 and the lower clamp 9 are connected to the outside of the pipeline, the initial locking is achieved through the cooperation of the clamp block 16 and the clamp groove 18, and the initial locking is achieved through the positioning hole 17. The two sides of the clamp groove 18 of the lower fixing block 15 are provided with through holes corresponding to the positioning hole 17, which can be initially fixed by bolts and nuts, but not locked, so that the support base 1 can rotate relative to the pipeline. At this time, the self-tightening mechanism can achieve initial locking of the support base to prevent the support base 1 from rotating without external force, resulting in the positioning of the screw rod and the valve stem. The self-tightening mechanism makes the block 21 press against the valve pipe under the action of the spring to achieve preliminary locking, and then by rotating the bidirectional screw 24, the bidirectional screw 24 is driven by a motor or a rocker set at the end of the bidirectional screw, so that the moving seat drives the positioning rod 26 to cooperate with the positioning block 3 for positioning, and the matching block is installed on the valve bracket, so that the positioning rod 26 is connected to the positioning groove 23, and then the upper clamp 8 and the lower clamp 9 are locked, and the push rod 12 is rotated, so that the pressure block 13 presses against the pipe to achieve locking and complete the positioning work. At this time, the bidirectional screw is driven in the reverse direction, and the positioning block is removed, and finally the positioning ruler 7 is driven up and down by the screw 4. The screw 4 is the same as the bidirectional screw, and the rocker is set at the end of the bidirectional screw by a motor or manually to measure the height of the valve stem descent. This application has the advantages of good applicability and ease of use.
[0028] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A device for accurately measuring the valve stem scale of a pumped storage power plant valve, characterized in that: The invention comprises a detection mechanism installed on a valve pipeline and a positioning block (3) installed on a valve stem bracket, wherein the detection mechanism comprises a support base (1), a bracket (2) perpendicular to the support base (1) is provided on the support base (1), a screw rod (4) parallel to the valve stem is provided in the middle of the bracket (2), a guide rod (5) is provided on one side of the screw rod (4), a screw rod seat (6) is provided on the screw rod (4) and the guide rod (5), a positioning ruler (7) for positioning the height of the valve stem is provided on the screw rod seat (6), a scale corresponding to the positioning ruler (7) is provided in the bracket (2), and a positioning mechanism corresponding to the positioning block (3) is provided on the front side of the screw rod (4) and the guide rod (5).
2. The device for accurately measuring the valve stem scale of a pumped storage power plant valve according to claim 1, characterized in that: The support base (1) comprises an upper clamp (8), a lower clamp (9), a connecting seat (10) for connecting the upper clamp (8) and the lower clamp (9), and a locking seat (11) for locking the upper clamp (8) and the lower clamp (9); the locking seat (11) comprises an upper fixing block (14) respectively arranged at the end of the upper clamp (8) and a lower fixing block (15) arranged at the end of the lower clamp (9); a clamping block (16) is arranged at the lower side of the upper fixing block (14); positioning holes (17) are arranged on both sides of the clamping block (16); and a clamping groove (18) corresponding to the clamping block (16) is arranged in the lower fixing block (15).
3. The device for accurately measuring the valve stem scale of a pumped storage power plant valve according to claim 2, characterized in that: A self-tightening mechanism is provided at the axial middle of the inner side of the upper clamp (8) and the lower clamp (9), and a plurality of groups of push rods (12) for locking the support base (1) and the valve pipeline are provided on one side of the self-tightening mechanism, and a radially arranged pressure block (13) is provided at the end of the push rod (12).
4. The device for accurately measuring the valve stem scale of a pumped storage power plant valve according to claim 3, characterized in that: The self-tightening mechanism comprises a telescopic rod (19) mounted on an upper clamp (8) and a lower clamp (9) and arranged radially, a spring (20) being arranged outside the telescopic rod (19), and abutment blocks (21) for abutting against a valve pipeline being arranged at the ends of the telescopic rod (19) and the spring (20).
5. The device for accurately measuring the valve stem scale of a pumped storage power plant valve according to claim 1, characterized in that: The positioning block (3) comprises an arc-shaped jacket (22), and a positioning groove (23) is arranged on the outer side of the arc-shaped jacket (22).
6. The device for accurately measuring the valve stem scale of a pumped storage power plant valve according to claim 1, characterized in that: The positioning mechanism comprises a bidirectional screw rod (24) which is arranged horizontally on one side of the screw rod (4) and the guide rod (5); a movable seat (25) which abuts against the inner bottom surface of the bracket (2) is arranged on the bidirectional screw rod (24); and a positioning rod (26) which corresponds to the positioning groove (23) is arranged on the movable seat (25).