Water turbine top cover bolt monitoring device

Abstract

The utility model discloses a water turbine top cover bolt monitoring device, which belongs to the technical field of water turbines and comprises a water turbine body, the water turbine body comprises an upper top cover and a lower shell, the upper top cover and the lower shell are locked through a top cover bolt, and the water turbine top cover bolt monitoring device further comprises a detection mechanism. The detection mechanism comprises a positioning piece, the positioning piece comprises an upper positioning ring and a lower positioning ring, the upper positioning ring and the lower positioning ring are connected outside the upper top cover and the lower shell in a sleeving mode, the upper positioning ring and the lower positioning ring are located on the upper side and the lower side of the top cover bolt, detection pieces are installed on the upper positioning ring and the lower positioning ring, and the detection pieces correspond to the top cover bolt. The positioning piece tightly wraps the upper side and the lower side of the top cover bolt, if the top cover bolt falls off, loosens and the like, force can be transmitted to the detection piece, the detection piece gives an alarm or enables equipment to stop and wait for manual maintenance, damage caused by falling off of the top cover bolt is effectively reduced, and meanwhile the service life of the equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of water turbines, in particular to a water turbine top cover bolt monitoring device. Background Art

[0002] The working condition of the turbine top cover bolts is crucial to the safe and stable operation of the entire unit.

[0003] When the turbine is working, it is necessary to ensure the installation of the top cover. If the top cover bolts are not pre-tightened enough, pre-tightened too much or pre-tightened unevenly, it may lead to reduced connection reliability and fatigue damage. In severe cases, it may even lead to major accidents such as flooding of the plant and damage to the unit. For example, in the domestic Huilong Pumped Storage Power Station and the Russian Sayan Hydropower Station, especially in the long-term use of the turbine, it is necessary to always maintain the stable connection of the turbine top cover bolts. However, in the long-term operation of the turbine, there may be negligence that causes the turbine top cover bolts to break or fall off, affecting the use of the equipment and causing great losses. How to invent a turbine top cover bolt monitoring device to improve these problems has become an urgent problem to be solved by technicians in this field. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a turbine top cover bolt monitoring device, which aims to improve the problem of breakage and falling off of the turbine top cover bolts during long-term operation of the turbine.

[0005] The utility model is implemented as follows: a turbine top cover bolt monitoring device comprises a turbine body, the turbine body comprises an upper top cover and a lower shell, the upper top cover and the lower shell are locked by top cover bolts, and further comprises

[0006] The detection mechanism includes a positioning member, and the positioning member includes an upper positioning ring and a lower positioning ring. The upper positioning ring and the lower positioning ring are sleeved on the outside of the upper top cover and the lower shell body. The upper positioning ring and the lower positioning ring are located on the upper and lower sides of the top cover bolts. The upper positioning ring and the lower positioning ring are installed with detection members, and the detection members are arranged corresponding to the top cover bolts.

[0007] In a preferred technical solution of the utility model, the positioning member also includes a positioning bolt and a connecting block, the connecting block is equally fixedly connected to the outer circumference of the upper positioning ring and the lower positioning ring, a through hole is opened on the connecting block, and the positioning bolt passes through the connecting block to lock the upper positioning ring and the lower positioning ring.

[0008] In a preferred technical solution of the utility model, the upper positioning ring and the lower positioning ring are formed by splicing two arcs, and the ends of the two arcs are respectively provided with an upper limit step and a lower limit step, and the upper limit step and the lower limit step are correspondingly locked and connected.

[0009] In a preferred technical solution of the present utility model, the upper limit step and the lower limit step are both step settings, and the steps of the upper limit step and the lower limit step are complementary, and a locking block is fixedly connected to one side where the upper limit step and the lower limit step are connected, and the locking block locks the upper limit step and the lower limit step.

[0010] In a preferred technical solution of the present utility model, the connecting blocks at both ends of the upper positioning ring and the lower positioning ring are divided into an arc-shaped partition in the middle, and the arc-shaped partitions at both ends of the upper positioning ring and the lower positioning ring are divided into a bolt connection block and an auxiliary connection block, and the auxiliary connection block and the bolt connection block are complementary.

[0011] In a preferred technical solution of the present utility model, the locking block is arranged in an isosceles trapezoidal shape.

[0012] In a preferred technical solution of the utility model, the detection component includes a detection block, which is slidably installed between the upper positioning ring and the connecting block on the lower positioning ring, and the detection block is respectively located on the upper and lower sides of the top cover bolt, and a pressure sensor is provided on the side of the detection block that contacts the top cover bolt.

[0013] In a preferred technical solution of the utility model, limit blocks are fixedly arranged on both sides of the detection block, and limit grooves matching with the limit blocks are opened on both sides of the connecting block. A spring is arranged on the side of the limit groove away from the top cover bolt, and the spring is connected to the limit block.

[0014] In a preferred technical solution of the utility model, an auxiliary detection block is provided at the connection between the upper positioning ring and the lower positioning ring, the auxiliary detection block is located between the auxiliary connecting block and the connecting block, and a spring is connected to the side of the auxiliary detection block away from the top cover bolt.

[0015] In a preferred technical solution of the present utility model, the multiple pressure sensors on the detection block are electrically connected.

[0016] The beneficial effects of the utility model are as follows: the utility model obtains a turbine top cover bolt monitoring device through the above design. When in use, the upper locating ring and the lower locating ring are spliced ​​and placed at the connection between the upper top cover and the lower shell body and connected through the locating bolts. The upper locating ring and the lower locating ring are first vertically staggered, and then rotated with each other to connect the upper limit step and the lower limit step while the locking block is locked. Multiple locating bolts fix the upper locating ring and the lower locating ring. At the same time, the detection block and the auxiliary detection block correspond to the upper and lower sides of each top cover bolt respectively. The detection block and the auxiliary detection block are made to fit the top cover bolt by adjusting the locating bolt. If the top cover bolt breaks, falls off, etc. during use, the detection block and the auxiliary detection block will move upward (downward) through the support of the spring. At this time, the pressure sensor on the detection block will detect it, and the pressure sensor control makes the entire equipment alarm, which effectively reduces the damage caused by the falling off of the top cover bolt and improves the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of a water turbine body provided by an embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the detection mechanism and the turbine body structure provided in the embodiment of the utility model;

[0020] Figure 3 A schematic diagram of the structure of the detection mechanism provided by the embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the decomposition structure of the detection mechanism provided in the embodiment of the utility model.

[0022] In the figure: 100-turbine body; 110-upper cover; 120-lower casing; 130-top cover bolts; 200-detection mechanism; 210-positioning piece; 211-upper positioning ring; 212-lower positioning ring; 213-positioning bolts; 214-upper limit step; 215-lower limit step; 216-locking block; 217-connecting block; 2171-bolt connecting block; 2172-auxiliary connecting block; 218-limiting groove; 220-detection piece; 221-detection block; 222-limiting block; 223-spring; 224-auxiliary detection block. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 and Figure 2 The utility model provides a technical solution: a turbine cover bolt monitoring device, comprising a turbine body 100, the turbine body 100 comprising an upper cover 110 and a lower shell 120, the upper cover 110 and the lower shell 120 are locked by a cover bolt 130, and further comprising

[0025] The detection mechanism 200 includes a positioning member 210, and the positioning member 210 includes an upper positioning ring 211 and a lower positioning ring 212. The upper positioning ring 211 and the lower positioning ring 212 are sleeved on the outside of the upper top cover 110 and the lower shell 120. The upper positioning ring 211 and the lower positioning ring 212 are located on the upper and lower sides of the top cover bolt 130. A detection member 220 is installed on the upper positioning ring 211 and the lower positioning ring 212. The detection member 220 is arranged corresponding to the top cover bolt 130. The positioning member 210 tightly wraps the detection member 220 on the upper and lower sides of the top cover bolt 130. If the top cover bolt 130 falls off or loosens, the force will be transmitted to the detection member 220, and the detection member 220 will issue a warning or shut down the equipment for manual maintenance.

[0026] See also Figures 2 to 4 The positioning member 210 also includes a positioning bolt 213 and a connecting block 217. The connecting block 217 is equally fixedly connected to the outer periphery of the upper positioning ring 211 and the lower positioning ring 212. A through hole is opened on the connecting block 217. The positioning bolt 213 penetrates the connecting block 217 to lock the upper positioning ring 211 and the lower positioning ring 212. The positioning bolt 213 locks the upper positioning ring 211 and the lower positioning ring 212 through the connecting block 217.

[0027] The upper positioning ring 211 and the lower positioning ring 212 are formed by splicing two arcs, and the ends of the two arcs are respectively provided with an upper limit step 214 and a lower limit step 215, and the upper limit step 214 and the lower limit step 215 are correspondingly locked and connected. The upper limit step 214 and the lower limit step 215 are both step settings, and the steps of the upper limit step 214 and the lower limit step 215 are complementary. The upper limit step 214 and the lower limit step 215 are fixedly connected to one side where the upper limit step 214 and the lower limit step 215 are connected. The locking block 216 locks the upper limit step 214 and the lower limit step 215, so that the upper positioning ring 211 and the lower positioning ring 212 are conveniently sleeved on the outside of the upper cover 110 and the lower shell 120. At the same time, bolts can be added to the connection between the upper positioning ring 211 and the lower positioning ring 212 to improve the firmness of the connection.

[0028] The connecting blocks 217 at both ends of the upper positioning ring 211 and the lower positioning ring 212 are separated in an arc shape in the middle, and the arcs at both ends of the upper positioning ring 211 and the lower positioning ring 212 are separated into bolt connection blocks 2171 and auxiliary connection blocks 2172. The auxiliary connection blocks 2172 and the bolt connection blocks 2171 complement each other. When the upper positioning ring 211 and the lower positioning ring 212 are removed, the detection block 221 and the auxiliary detection block 224 will not fall off, which facilitates the assembly and disassembly of the upper positioning ring 211 and the lower positioning ring 212. The locking block 216 is set in an isosceles trapezoid.

[0029] The detection member 220 includes a detection block 221, which is limitedly slidably installed between the upper positioning ring 211 and the connecting block 217 on the lower positioning ring 212. The detection block 221 is respectively located on the upper and lower sides of the top cover bolt 130, and a pressure sensor is provided on the side of the detection block 221 that contacts the top cover bolt 130. The two sides of the detection block 221 are respectively fixedly provided with a limit block 222, and the two sides of the connecting block 217 are respectively provided with a limit groove 218 that matches the limit block 222. The side of the limit groove 218 away from the top cover bolt 130 is provided with a spring 223, and the spring 223 is connected to the limit block 222. An auxiliary detection block 224 is provided at the connection between the upper positioning ring 211 and the lower positioning ring 212, and the auxiliary detection block 224 is located between the auxiliary connecting block 2172 and the connecting block 217, and the side of the auxiliary detection block 224 away from the top cover bolt 130 is connected with a spring 223. The multiple pressure sensors on the detection block 221 are electrically connected. When the top cover bolt 130 becomes loose, it will squeeze the detection block 221. At this time, the pressure sensor on the detection block 221 will sense it and transmit the signal. At the same time, a receiver alarm is set externally. At the same time, the pressure sensor is connected to the equipment shutdown switch. In the event of an accident, the equipment can be controlled to shut down and reduce losses.

[0030] Working principle: After the installation of the turbine body 100 is completed, the upper positioning ring 211 and the lower positioning ring 212 are spliced ​​and placed at the connection between the upper top cover 110 and the lower shell 120, and connected through the positioning bolts 213. The upper positioning ring 211 and the lower positioning ring 212 are first vertically staggered, and then rotated to connect the upper limit step 214 and the lower limit step 215. At the same time, the locking block 216 is locked. Multiple positioning bolts 213 fix the upper positioning ring 211 and the lower positioning ring 212. At the same time, the detection block 221 and the auxiliary detection block 224 correspond to the upper and lower sides of each top cover bolt 130 respectively. The positioning bolts 213 are adjusted to make the detection block 221 and the auxiliary detection block 224 fit with the top cover bolt 130. If the top cover bolt 130 breaks or falls off during use, the detection block 221 and the auxiliary detection block 224 will move upward (downward) with the support of the spring 223. At this time, the pressure sensor on the detection block 221 will detect it, and the pressure sensor control will cause the entire device to alarm.

[0031] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A turbine top cover bolt monitoring device, comprising a turbine body, wherein the turbine body comprises an upper top cover and a lower shell, wherein the upper top cover and the lower shell are locked by top cover bolts, characterized in that: Also includes The detection mechanism includes a positioning member, and the positioning member includes an upper positioning ring and a lower positioning ring. The upper positioning ring and the lower positioning ring are sleeved on the outside of the upper top cover and the lower shell body. The upper positioning ring and the lower positioning ring are located on the upper and lower sides of the top cover bolts. The upper positioning ring and the lower positioning ring are installed with detection members, and the detection members are arranged corresponding to the top cover bolts.

2. A turbine top cover bolt monitoring device as claimed in claim 1, characterized in that: The positioning member also includes positioning bolts and connecting blocks, wherein the connecting blocks are equally fixedly connected to the outer circumferences of the upper positioning ring and the lower positioning ring, and through holes are opened on the connecting blocks. The positioning bolts penetrate the connecting blocks to lock the upper positioning ring and the lower positioning ring.

3. A turbine top cover bolt monitoring device as claimed in claim 2, characterized in that: The upper positioning ring and the lower positioning ring are formed by splicing two arcs, and the ends of the two arcs are respectively provided with an upper limit step and a lower limit step, and the upper limit step and the lower limit step are correspondingly locked and connected.

4. A turbine top cover bolt monitoring device as claimed in claim 3, characterized in that: The upper limit step and the lower limit step are both step settings, and the steps of the upper limit step and the lower limit step are complementary. A locking block is fixedly connected to one side where the upper limit step and the lower limit step are connected, and the locking block locks the upper limit step and the lower limit step.

5. A turbine top cover bolt monitoring device as claimed in claim 3, characterized in that: The connecting blocks at both ends of the upper positioning ring and the lower positioning ring are divided into arc-shaped partitions in the middle, and the arc-shaped partitions at both ends of the upper positioning ring and the lower positioning ring are divided into bolt connection blocks and auxiliary connection blocks, and the auxiliary connection blocks are complementary to the bolt connection blocks.

6. A turbine top cover bolt monitoring device as claimed in claim 4, characterized in that: The locking block is arranged in an isosceles trapezoidal shape.

7. A turbine top cover bolt monitoring device as claimed in claim 5, characterized in that: The detection member includes a detection block, which is slidably installed between the upper positioning ring and the connecting block on the lower positioning ring. The detection blocks are respectively located on the upper and lower sides of the top cover bolt, and a pressure sensor is provided on the side of the detection block that contacts the top cover bolt.

8. A turbine top cover bolt monitoring device as claimed in claim 7, characterized in that: Limiting blocks are fixedly arranged on both sides of the detection block, and limiting grooves matching with the limiting blocks are opened on both sides of the connection block. A spring is arranged on a side of the limiting groove away from the top cover bolt, and the spring is connected to the limiting block.

9. A turbine top cover bolt monitoring device as claimed in claim 8, characterized in that: An auxiliary detection block is provided at the connection between the upper positioning ring and the lower positioning ring. The auxiliary detection block is located between the auxiliary connecting block and the connecting block. A spring is connected to the side of the auxiliary detection block away from the top cover bolt.

10. A turbine top cover bolt monitoring device as claimed in claim 7, characterized in that: The multiple pressure sensors on the detection block are electrically connected.

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