Size detector suitable for steam turbine bolt

Abstract

The size detector comprises a detection mechanism, the detection mechanism comprises a connection handle, the end portion of the connection handle is connected with an oil pump, the output end of the oil pump is provided with a corrugated pipe, the corrugated pipe is connected with a sealing cylinder, and a measuring hole is formed in the center of the upper end of the sealing cylinder in a penetrating mode. And a measuring rod is arranged in the measuring hole in a sliding manner. The detector is relatively high in measuring efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of steam turbine detection and relates to a size detector suitable for steam turbine bolts. Background Art

[0002] A steam turbine is a device that converts the thermal energy of steam into mechanical energy. It is widely used in power generation and industrial fields. It is mainly composed of a rotor and a stator. When working, steam is sprayed into the blades of the steam turbine through a nozzle to drive the rotor to rotate, thereby driving a generator or other mechanical equipment. The basic working principle of a steam turbine is to use high-temperature and high-pressure steam to work on the blades, rotate to generate mechanical energy, and then through deceleration and conversion, finally achieve power generation or other power output. According to the flow mode of steam, steam turbines can be divided into types such as recirculation type and impulse type. In the field of electricity, steam turbines are often used in combination with boilers to form a cogeneration system to improve energy utilization efficiency. Its application range includes thermal power plants, nuclear power plants and some large industrial equipment. In order to ensure the stable and safe operation of steam turbines, it is usually necessary to use a size detector for steam turbine bolts. The detector usually refers to equipment or tools used to measure and detect the size, thread condition and qualification of steam turbine bolts.

[0003] In the prior art, in the process of inspecting turbine bolts, a variety of inspection tools are usually needed to measure the size length and bolt head diameter of the bolts. The inspection process is relatively cumbersome, which affects the inspection efficiency of the inspectors, and it is impossible to determine whether the bolt head of the bolt is regular when inspecting the bolt head of the bolt; and in the existing public patent (publication number: CN116718092A), a size detector suitable for turbine bolts and a method of use are disclosed, which can facilitate the inspectors to clamp the bolts, and the length of the bolts can be measured during the clamping process and it is convenient for the inspectors to replace them. When inspecting the bolt head, the side of the bolt head can be quickly inspected, and then the size of the bolt is quickly determined. Whether the bolt is standard, and the positioning piece can be used to detect the threaded rod diameter of the bolt, thereby improving the efficiency of bolt inspection. The above-mentioned comparative patent fixes and clamps the bolt to be tested by a clamping frame, and multiple measurement processes can be realized. However, during the measurement process, since the bolt installation position is usually distributed in multiple positions, when the bolt to be tested is in a higher or deeper position, it is often difficult to align the device with the bolt for measurement, which easily reduces the measurement efficiency. Summary of the invention

[0004] The object of the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a size detector suitable for turbine bolts, the measurement efficiency of the detector being relatively high.

[0005] To achieve the above-mentioned purpose, the size detector suitable for turbine bolts described in the present invention includes a detection mechanism, which includes a connecting handle, the end of the connecting handle is connected to an oil pump, the output end of the oil pump is provided with a bellows, the bellows is connected to a sealing cylinder, a measuring hole is opened through the center of the upper end of the sealing cylinder, and a measuring rod is slidably arranged inside the measuring hole.

[0006] The further improvement of the size detector applicable to steam turbine bolts of the present invention is:

[0007] Furthermore, a telescopic cylinder is slidingly sleeved at the lower end of the sealing cylinder, the upper end of the telescopic cylinder is connected to the inside of the sealing cylinder via a spring, and a sealing ring is fixedly provided at the lower end of the telescopic cylinder.

[0008] Furthermore, a limit plate is provided at the upper end of the measuring rod, a return spring is provided at the lower end of the limit plate, and the lower end of the return spring is connected to the upper end of the sealing cylinder.

[0009] Furthermore, a distance sensor is provided on the lower side of the limit plate, and an auxiliary scale is provided on the measuring rod.

[0010] Furthermore, a connecting tube is provided on one end of the connecting handle away from the sealing tube, and a mounting thread is provided on one end of the connecting tube away from the sealing tube.

[0011] Furthermore, a feeding ejector is provided on one end of the connecting handle away from the oil pump.

[0012] Furthermore, the storage mechanism is also included, and the storage mechanism includes a storage cylinder, one end of the storage cylinder is connected to the feed top plate through a spring telescopic rod, and the other end of the storage cylinder is threadedly sleeved with a connecting cover.

[0013] Furthermore, it also includes an adjustment mechanism, which includes a fixed block, the fixed block is fixedly sleeved in the middle of the outside of the sealing tube, the rear end of the fixed block is provided with an adjustment block, the shaft position inside the adjustment block is threadedly sleeved with a second limit button, the end of the adjustment block away from the fixed block is provided with an adjustment telescopic frame, and the upper end of the adjustment telescopic frame is threadedly sleeved with a first limit button.

[0014] Furthermore, it also includes an auxiliary protection mechanism, which includes two connecting blocks, a rotating frame is rotatably arranged on the connecting block, a protective block is arranged between the two rotating frames, an embedding groove is opened at the lower end of the protective block, and a pressing handle is arranged on the end of the rotating frame away from the connecting block.

[0015] The size detector for turbine bolts of the present invention comprises a detection mechanism, wherein the detection mechanism comprises a connecting handle, an end of the connecting handle is connected to an oil pump, an output end of the oil pump is provided with a bellows, the bellows is connected to a sealing cylinder, a measuring hole is provided through the center of the upper end of the sealing cylinder, and a measuring rod is slidably provided inside the measuring hole;

[0016] An adjusting mechanism is arranged inside the detection mechanism, an auxiliary protection mechanism is fixedly arranged on the upper end of the detection mechanism close to the sealing cylinder, and a storage mechanism is arranged inside the end of the detection mechanism away from the sealing cylinder.

[0017] The present invention has the following beneficial effects:

[0018] During specific operation, the size detector suitable for turbine bolts described in the present invention injects rust inhibitor into the sealing tube through an oil pump, and the volume of the measured bolts can be calculated, thereby realizing the detection of the bolt size and regularity, improving the measurement accuracy, and realizing the maintenance of the bolts. The detection mechanism is connected by an adjustment mechanism. When performing the detection operation, the auxiliary protection mechanism can be flipped open, and then the first limit button and the second limit button are loosened so that the adjustment block and the adjustment telescopic frame can be adjusted to the appropriate angle and length, thereby realizing the change of the hand-held position, making it convenient to align the detector with bolts in various positions for detection, greatly improving the detection effect of the detector, and at the same time, an auxiliary protection mechanism is provided, which can cover and protect the electronic components inside the detector when closed, prolonging the service life, facilitating the squeezing of the sealing tube when unfolded, and facilitating the measurement work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the axial side of the present invention;

[0020] Figure 2 This is an axial schematic diagram of the auxiliary protection mechanism of the present invention after it is deployed;

[0021] Figure 3 It is an explosion schematic diagram of the present invention;

[0022] Figure 4 It is a schematic diagram of the axial side of the detection mechanism of the present invention;

[0023] Figure 5 It is a partially cutaway axial schematic diagram of the detection mechanism of the present invention;

[0024] Figure 6 It is a schematic diagram of the axial side of the measuring rod of the present invention;

[0025] Figure 7 It is a schematic diagram of the axial side of the adjustment mechanism of the present invention;

[0026] Figure 8It is a schematic bottom-view axial side view of the auxiliary protection mechanism of the present invention.

[0027] Among them, 1 is a detection mechanism, 2 is an adjustment mechanism, 3 is an auxiliary protection mechanism, 4 is a storage mechanism, 101 is a measuring hole, 102 is a sealing cylinder, 103 is a telescopic cylinder, 104 is a sealing ring, 105 is a bellows, 106 is an oil pump, 107 is a connecting handle, 108 is a connecting cylinder, 109 is a mounting thread, 110 is a feed ejector pin, 111 is a limit plate, 112 is a distance sensor, 113 is a reset spring, 114 is an auxiliary scale, 115 is a measuring rod, 201 is a fixed block, 202 is an adjustment block, 203 is a first limit button, 204 is a second limit button, 205 is an adjustment telescopic frame, 301 is a connecting block, 302 is a rotating frame, 303 is a protective block, 304 is an embedding groove, 305 is a pressing handle, 401 is a feed top plate, 402 is a storage cylinder, and 403 is a connecting cover. DETAILED DESCRIPTION

[0028] 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 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.

[0029] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0031] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects are in an "or" relationship.

[0032] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0033] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0036] refer to Figures 1 to 4The dimension detector for turbine bolts of the present invention comprises a detection mechanism 1, which comprises a connecting handle 107, the connecting handle 107 is connected to an oil pump 106, a bellows 105 is fixedly provided at the output end of the oil pump 106, the bellows 105 is fixedly connected to a sealing cylinder 102, a measuring hole 101 is penetrated through the center of the upper end of the sealing cylinder 102, a measuring rod 115 is slidably provided inside the measuring hole 101, an adjusting mechanism 2 is provided inside the detection mechanism 1, an auxiliary protection mechanism 3 is fixedly provided on the upper end of the detection mechanism 1 close to the sealing cylinder 102, and a storage mechanism 4 is provided inside the end of the detection mechanism 1 away from the sealing cylinder 102.

[0037] Specifically, in the above embodiment, the length of the turbine bolt can be measured by the measuring rod 115 provided in the detection mechanism 1, and in the process of measuring the length, the rust inhibitor can be input into the interior of the sealing tube 102 through the oil pump 106, and the volume of the bolt can be measured by measuring the input rust inhibitor, so that the regularity of the bolt can be accurately identified, which greatly improves the accuracy of the detector. In addition, an auxiliary protection mechanism 3 is provided in the detector, which can cover and protect the electronic components inside the detector when closed, and an adjustment mechanism 2 is also provided, by which the hand-holding position can be changed, thereby facilitating the detection of the detector at bolts in various positions, thereby greatly improving the detection effect of the detector.

[0038] refer to Figures 4 to 6 A telescopic cylinder 103 is provided on the sliding sleeve at the lower end of the sealing cylinder 102. The upper end of the telescopic cylinder 103 is connected to the inside of the sealing cylinder 102 through a spring. A sealing ring 104 is fixedly provided at the lower end of the telescopic cylinder 103. A limit plate 111 is fixedly provided on the upper end of the measuring rod 115. A reset spring 113 is fixedly provided on the lower end of the limit plate 111. The lower end of the reset spring 113 is fixedly connected to the upper end of the sealing cylinder 102. A distance sensor 112 is fixedly provided on the lower side of the limit plate 111. An auxiliary scale 114 is provided on the measuring rod 115. A connecting cylinder 108 is fixedly provided on the end of the connecting handle 107 away from the sealing cylinder 102. An installation thread 109 is provided on the end of the connecting cylinder 108 away from the sealing cylinder 102.

[0039] Specifically, in the above embodiment, during the measurement process, the detector covers the outside of the bolt to be measured with the sealing cylinder 102 and presses inward. When pressing, the telescopic cylinder 103 squeezes into the inside of the sealing cylinder 102, so that the sealing ring 104 is tightly pressed against the installation position of the bolt to be measured. At this time, the tip of the measuring rod 115 will press against the end of the bolt to be measured and slide away from the sealing cylinder 102. During the sliding process, the limit plate 111 will drive the distance sensor 112 to gradually move away from the sealing cylinder 102, and then measure the extended length of the measuring bolt by the displacement distance of the measuring rod 115, and the cylindrical part specification of the measuring rod 115 is The remaining volume inside the sealing cylinder 102 can be calculated according to the sliding distance, and then the rust inhibitor is injected into the sealing cylinder 102 through the oil pump 106, and a one-way air valve is set at the connection position between the output pipe of the oil pump 106 and the sealing cylinder 102, which is convenient for injecting the rust inhibitor into the sealed space. After the injection is completed, the volume of the input rust inhibitor can be obtained through the oil pump 106. Finally, the volume of the measuring bolt = the volume of the sealing cylinder 102 - the volume of the rust inhibitor pumped into the oil pump 106 - the internal volume of the bellows 105 - the remaining volume of the measuring rod 115. Therefore, the detector can measure the volume of the measuring bolt and then identify its regularity.

[0040] refer to Figure 5 A feed ejector pin 110 is provided on the end of the connecting handle 107 away from the oil pump 106. The storage mechanism 4 includes a storage cylinder 402. The storage cylinder 402 is connected to a feed ejector plate 401 at an opening at one end near the connecting handle 107 through a spring telescopic rod. The feed ejector pin 110 penetrates the opening and is pushed into one end of the feed ejector plate 401. A connecting cover 403 is threadedly sleeved on one end of the storage cylinder 402.

[0041] Specifically, in the above embodiment, the storage cylinder 402 in the storage mechanism 4 can be inserted into the interior of the connecting cylinder 108, and can be fixed together through the connecting cover 403 and the mounting bolts. During the installation of the storage cylinder 402, the feed pin 110 will push the feed top plate 401 into the interior of the storage cylinder 402, thereby connecting the interior of the storage cylinder 402 with the internal space of the connecting handle 107, making it convenient for the oil pump 106 to pump the rust inhibitor inside the storage cylinder 402 into the interior of the sealing cylinder 102.

[0042] refer to Figure 7 The adjusting mechanism 2 comprises a fixed block 201, which is fixedly sleeved in the middle of the outer part of the sealing tube 102. An adjusting block 202 is fixedly arranged at the rear end of the fixed block 201. A second limit button 204 is threadedly sleeved at the internal rotating shaft position of the adjusting block 202. An adjusting telescopic frame 205 is fixedly arranged at the other end of the adjusting block 202. A first limit button 203 is threadedly sleeved at the upper end of the adjusting telescopic frame 205.

[0043] Specifically, in the above embodiment, the fixed plate supports the sealing cylinder 102, and the adjusting block 202 can be rotated so that the position of the handle 107 connected to the other end can be changed, so that the handle part and the sealing cylinder 102 can be in a vertical and parallel state, which is convenient for detection work, and the length of the telescopic frame 205 can be adjusted to be changed, thereby facilitating the sealing cylinder 102 to more easily cover the outside of the bolts in various positions. At the same time, when adjusting the angle and length, the second limit button 204 and the first limit button 203 can be used for limiting and releasing respectively, which is convenient for adjustment.

[0044] refer to Figure 5 The auxiliary protection mechanism 3 includes two connecting blocks 301, a rotating frame 302 is rotatably arranged between the opposite sides of the two connecting blocks 301, a protective block 303 is fixedly arranged on one side of the rotating frame 302, an embedding groove 304 is opened inside the lower end of the protective block 303, and a pressing handle 305 is fixedly arranged at one end of the rotating frame 302.

[0045] Specifically, in the above embodiment, the rotating frame 302 rotates on the detection mechanism 1 through the connection of the connecting block 301, so that when the sealing cylinder 102 needs to be pressed during the measurement process, the downward pressure can be assisted by holding the downward pressure handle 305, which facilitates the formation of the sealed space inside the sealing cylinder 102, and when the detector is not in use, the auxiliary protection mechanism 3 will cover the upper end of the water pump, thereby realizing the protection of the electronic components and improving the service life.

[0046] The specific use process of the present invention is:

[0047] When performing the detection operation, the auxiliary protection mechanism 3 is first turned over and opened, and then the first limit button 203 and the second limit button 204 are loosened so that the adjustment block 202 and the adjustment telescopic frame 205 can be adjusted to the appropriate angle and length. At this time, the sealing cylinder 102 is aligned with the measuring bolt and pressure is applied to squeeze the telescopic cylinder 103 into the inside of the sealing cylinder 102 to ensure that the sealing ring 104 fits tightly around the installation position of the bolt to be measured. At this time, the tip of the measuring rod 115 will support the end of the bolt to be measured and slide in the direction away from the sealing cylinder 102. During the sliding process, the limit plate 111 will guide the distance sensor 112 to gradually move away from the sealing cylinder 102, so that the extended length of the measuring bolt can be measured by the distance of the displacement of the measuring rod 115. In addition, the cylindrical part of the measuring rod 115 has precise specifications, and the remaining volume inside the sealing cylinder 102 can be calculated according to the sliding distance. Subsequently, the rust preventive is injected into the sealing cylinder 102 through the oil pump 106, and a one-way air valve is installed at the connection between the output pipe of the oil pump 106 and the sealing cylinder 102 to facilitate the injection of the rust preventive into the sealed space. After the injection is completed, the volume of the input rust preventive can be measured by the oil pump 106, and then the volume of the measured bolt can be calculated, thereby realizing the detection of the size and regularity of the bolt.

[0048] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and disclosure of the invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0049] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A size detector suitable for steam turbine bolts, characterized in that: The detection mechanism (1) comprises a connecting handle (107), the end of the connecting handle (107) is connected to an oil pump (106), the output end of the oil pump (106) is provided with a bellows (105), the bellows (105) is connected to a sealing cylinder (102), a measuring hole (101) is provided through the center of the upper end of the sealing cylinder (102), and a measuring rod (115) is slidably provided inside the measuring hole (101).

2. The size detector for steam turbine bolts according to claim 1, characterized in that: A telescopic cylinder (103) is slidably sleeved at the lower end of the sealing cylinder (102); the upper end of the telescopic cylinder (103) is connected to the inside of the sealing cylinder (102) via a spring; and a sealing ring (104) is fixedly disposed at the lower end of the telescopic cylinder (103).

3. The size detector for steam turbine bolts according to claim 1, characterized in that: A limit plate (111) is disposed at the upper end of the measuring rod (115), a return spring (113) is disposed at the lower end of the limit plate (111), and the lower end of the return spring (113) is connected to the upper end of the sealing cylinder (102).

4. The size detector for steam turbine bolts according to claim 3, characterized in that: A distance sensor (112) is arranged on the lower side of the limiting plate (111), and an auxiliary scale (114) is arranged on the measuring rod (115).

5. The size detector for steam turbine bolts according to claim 1, characterized in that: A connecting tube (108) is provided on one end of the connecting handle (107) away from the sealing tube (102), and a mounting thread (109) is provided on one end of the connecting tube (108) away from the sealing tube (102).

6. The size detector for steam turbine bolts according to claim 1, characterized in that: An inlet ejector pin (110) is provided on one end of the connecting handle (107) away from the oil pump (106).

7. The size detector for steam turbine bolts according to claim 6, characterized in that: It also includes the storage mechanism (4), which includes a storage cylinder (402), one end of which is connected to the feed top plate (401) via a spring telescopic rod, and the other end of which is threadedly sleeved with a connecting cover (403).

8. The size detector for steam turbine bolts according to claim 1, characterized in that: The invention also comprises an adjusting mechanism (2), wherein the adjusting mechanism (2) comprises a fixed block (201), the fixed block (201) being fixedly sleeved at the middle of the outside of the sealing cylinder (102), an adjusting block (202) being arranged at the rear end of the fixed block (201), a second limit button (204) being threadedly sleeved at the rotating shaft position inside the adjusting block (202), an adjusting telescopic frame (205) being arranged at one end of the adjusting block (202) away from the fixed block (201), and a first limit button (203) being threadedly sleeved at the upper end of the adjusting telescopic frame (205).

9. The size detector for steam turbine bolts according to claim 1, characterized in that: The invention also comprises an auxiliary protection mechanism (3), wherein the auxiliary protection mechanism (3) comprises two connecting blocks (301), a rotating frame (302) is rotatably arranged on the connecting block (301), a protective block (303) is arranged between the two rotating frames (302), an embedding groove (304) is provided at the lower end of the protective block (303), and a pressing handle (305) is arranged at one end of the rotating frame (302) away from the connecting block (301).

10. A size detector suitable for steam turbine bolts, characterized in that: The detection mechanism (1) comprises a connecting handle (107), the end of the connecting handle (107) is connected to an oil pump (106), the output end of the oil pump (106) is provided with a bellows (105), the bellows (105) is connected to a sealing cylinder (102), a measuring hole (101) is provided through the center of the upper end of the sealing cylinder (102), and a measuring rod (115) is slidably provided inside the measuring hole (101); An adjusting mechanism (2) is arranged inside the detection mechanism (1); an auxiliary protection mechanism (3) is fixedly arranged on the upper end of the detection mechanism (1) close to the sealing tube (102); and a storage mechanism (4) is arranged inside the end of the detection mechanism (1) away from the sealing tube (102).

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