Boiler base fixing and connecting device

Abstract

The utility model relates to a boiler base fixing and connecting device which comprises an assembling base fixed to a base, an elastic supporting assembly and a sensing assembly, wherein the elastic supporting assembly and the sensing assembly are arranged on the assembling base. The elastic supporting assembly comprises a plurality of studs, and screw rings, springs and nuts which are arranged on the studs. The lower end of the stud is fixed to the assembling base and extends in the vertical direction. The sensing assembly comprises a sliding seat, a roller shaft, a sleeve and a sensing unit. The sliding seat is correspondingly matched with the stud and can move in the vertical direction relative to the assembling base. And the spring can apply thrust on the sliding seat. The roller shaft is pivotally assembled on the sliding seat, and the top of the peripheral face of the roller shaft can keep in contact with the boiler body. The sleeve is fixed to the roller shaft and provided with a swing arm vertically extending downwards. And the sensing unit is fixedly arranged on the sliding seat and corresponds to the lower part of the swing arm. When the sleeve rotates and swings along with the roller shaft, the swing arm can drive the sensitive part of the sensing unit to generate physical quantity change. The device can be in contact with the boiler body to detect the inclination state of the boiler body and provide early warning support.

Description

Boiler base fixing connection device Technical Field

[0001] This utility model relates to a boiler base fixing and connecting device. Background Technology

[0002] A boiler is a steam or hot water production device commonly used in industrial settings such as heating and power generation. Its operating principle involves burning fuels such as natural gas or coal to generate a large amount of heat energy, which is then used to heat water inside the boiler, producing a large amount of steam. The boiler base supports the boiler body, fixing it to the ground and maintaining a vertical distance from the ground. It serves as a support device to stabilize the boiler body and keep it in a horizontal position. If the boiler's installation location is significantly tilted relative to the horizontal plane, this tilt can easily worsen during operation, increasing instability in the base's support and raising safety risks. Therefore, there is an urgent need to design a base capable of monitoring the tilt status of the boiler body. Summary of the Invention

[0003] To achieve the above objectives, this utility model provides a boiler base fixing connection device. After being fixed on the base, the fixing connection device can contact the boiler body, detect the tilt state of the boiler body, and provide early warning support.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a boiler base fixing connection device, including an assembly base fixed on the crossbar of the base, and an elastic support assembly and a sensing assembly disposed on the assembly base. The assembly base and the crossbar are fixedly connected by bolts.

[0005] The flexible support assembly includes multiple studs, and threaded rings, springs, and nuts disposed on each stud. The lower end of the stud is fixed to the mounting base and extends vertically, with the threaded rings, springs, and nuts disposed on the studs from bottom to top.

[0006] The sensing assembly includes a slide, a roller, a sleeve, and a sensing unit. The slide has a through hole that corresponds to a stud, allowing it to move vertically relative to the mounting base. A spring fitted onto the stud applies an elastic thrust to the slide, and a threaded ring adjusts the force exerted by the spring on the slide. The roller is pivotally mounted on the upper part of the slide, and its outer circumferential surface contacts the boiler body. The axis of the roller extends perpendicularly to the axis of the boiler body. The sleeve is fixed to the roller and has a vertically downward extending swing arm. The sensing unit is fixed to the top of the slide and located below the swing arm.

[0007] The elastic support assembly can apply an upward thrust on the slide block, thus ensuring good contact between the roller and the boiler body. When the sleeve swings with the roller, it causes a change in the physical quantity of the sensitive part of the swing arm driving the sensing unit, resulting in the sensing unit emitting a real-time sensing signal. After processing the sensing signal, the sensing unit can obtain vibration parameters. By analyzing the vibration frequency, amplitude, etc., the real-time tilt of the boiler body relative to the horizontal plane can be determined.

[0008] It should be noted that the more significant the tilt of the boiler body relative to the horizontal plane, the stronger its tendency to axially sway. During operation, this swaying tendency exerts a greater torque on the rollers, making the reciprocating oscillation / vibration of the swing arm more pronounced. Conversely, when the boiler body maintains a suitable tilt relative to the horizontal plane, the torque exerted on the rollers by the boiler body is less likely to cause a significant rotational tendency, and the reciprocating vibration / swing of the swing arm will not be prominent, or may even remain almost stationary. Therefore, once the tilt of the boiler body exceeds the suitable range, the change in the sensor signal will be very obvious, thus easily helping to determine the tilt status of the boiler body.

[0009] Optionally, two sleeves are used, each fixed to one end of the roller shaft. Each sleeve has a vertically downward-extending swing arm. The sensing unit is located below one of these swing arms.

[0010] Optionally, an elastic layer is fixedly provided on the side of the roller body. When the roller is close to the boiler body, the elastic layer can contact the boiler body. The thickness of the elastic layer is generally limited to within 2 mm.

[0011] Optionally, the sensing unit includes a U-shaped base, a connector, and a grating sensor. The U-shaped base is fixed to the top surface of the slide. The connector is fixed to the lower end of the swing arm and extends between the movable arm plate and the fixed arm plate of the U-shaped base. A strip-shaped slot is formed in the lower part of the connector, and the movable grating in the grating sensor is fixed on the connector and corresponds to the strip-shaped slot. The grating sensor body is fixed on the two arm plates and can correspond and match with the movable grating.

[0012] The beneficial effects of this utility model are: after the boiler base fixing connection device provided by this utility model is fixed on the base, it can contact the boiler body, sensitively monitor the development trend of the tilt state of the boiler body, and provide early warning support. This helps to take timely measures before the instability of the boiler body's support on the base deteriorates excessively, thereby reducing safety risks. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the real-time state structure of this utility model.

[0014] Figure 2 is a magnified schematic diagram of the structure at point A in Figure 1.

[0015] Figure 3 is a top view of the structure when the slide and the roller are matched.

[0016] Figure 4 is a schematic cross-sectional view of the roller shaft when it is matched with the sleeve and retaining ring.

[0017] Figure 5 is a cross-sectional structural diagram of the sleeve (without the U-shaped connector).

[0018] Figure 6 is a side view of the sleeve structure (when equipped with a U-shaped connector and matched with the grating sensor).

[0019] Figure 7 is a magnified view of the structure at point B in Figure 6.

[0020] In the diagram: 100 Boiler body; 200 Base, 201 Frame, 201a Horizontal bar, 201b Vertical bar, 202 Support arm; 300 Fixed connection device; 10 Assembly base; 20 Elastic support assembly, 21 Stud, 22 Threaded ring, 23 Spring, 24 Nut; 30 Sensor assembly, 31 Slide, 311 Edge plate, 312 Vertical arm, 313 U-shaped base, 3131 Boom plate, 3132 Guide column, 32 Roller, 321 Shaft body, 3211 Shoulder, 3212 Prismatic surface section, 3213 External threaded surface section, 322 Elastic layer, 33 Sleeve, 331 Swing arm, 332 U-shaped connector, 3321 End plate, 3322 Strip groove, 34 Locking ring, 35 Grating sensor, 351 Grating sensor body, 352 Moving grating. Detailed Implementation

[0021] The structures, proportions, and sizes shown in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, terms such as "upper," "lower," "front," "rear," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0022] As shown in Figures 1 to 7, the boiler base fixing connection device is installed at the vertical distance formed between the boiler body 100 and the base 200, and corresponds to one axial end of the boiler body 100. This fixing connection device 300 can monitor the possible axial movement of the boiler body 100 relative to the base 200, and thus monitor the tilting of the boiler body 100 relative to the horizontal plane.

[0023] As shown in Figure 1, the base 200, commonly used to support and fix the boiler body 100, includes a rectangular frame 201 and multiple support arms 202 (at least four) fixed on the two longitudinal bars 201b on both sides of the frame 201. The upper part of each support arm 202 forms an arc surface that can form a large contact surface with the outer wall of the boiler body 100. This large contact surface between the support arm 202 and the boiler body 100 increases the frictional resistance to relative movement and provides stable support. The two horizontal bars 201a of the frame 201 correspond to the lower sides of the axial ends of the boiler body 100. A vertical distance is formed between the upper end surface of the horizontal bar 201a and the bottom of the outer peripheral surface of the boiler body 100. The fixing connection device 300 involved in this application is located at this vertical distance. Since the common structure of the base 200 and its connection method with the boiler body 100 are known to those skilled in the art, further details are omitted.

[0024] As shown in Figures 1 to 7, the fixed connection device 300 includes an assembly base 10 fixed to a crossbar 201a of the base 200, and an elastic support assembly 20 and a sensing assembly 30 disposed on the assembly base 10. The assembly base 10 and the crossbar 201a are fixedly connected by bolts.

[0025] The elastic support assembly 20 includes a plurality of studs 21, and a threaded ring 22, a spring 23, and a nut 24 disposed on each stud 21. The lower end of each stud 21 is fixed to the mounting base 10, and each stud 21 extends vertically upward. The threaded ring 22, the spring 23, and the nut 24 are distributed and disposed on the stud 21 from bottom to top. Tightening the threaded ring 22 can push the spring 23 upward to move vertically, causing it to expand and contract.

[0026] The sensing assembly 30 includes a slide 31, a roller 32, a pair of sleeves 33, and a sensing unit. In the illustrated embodiment, two sleeves 33 are configured (but the corresponding connecting mechanisms at the lower ends of the two sleeves 33 are different) to harmonize the balance of both ends of the roller 32. In other embodiments, one sleeve 33 may be configured and fixed at the axial center position of the roller 32; in this case, the top height of the outer circumferential surface of the sleeve 33 is relatively lower than the top height of the outer circumferential surface of the roller 32.

[0027] The lower part of the slide 31 has a horizontally extending flange 311, and the flange 311 has through holes that correspond one-to-one with the studs 21. After the flange 311 is matched with the studs 21, it can guide the slide 31 to move vertically relative to the mounting base 10. The nut 24 is disposed above the flange 311 and can prevent the flange 311 from moving upward relative to the studs 21. When the threaded ring 22 is screwed to move upward relative to the studs 21, it can drive the spring 23 sleeved on the studs 21 to apply an elastic thrust to the slide 31 (the flange 311), thereby causing the slide 31 to move upward relative to the mounting base 10 and maintain it at a certain height. Tightening the threaded ring 22 can adjust the magnitude of the thrust (in the vertical direction) of the spring 23 acting on the slide 31.

[0028] The roller 32 is pivotally mounted on the upper part of the slide 31, and the top of the outer peripheral surface of the roller 32 can contact the boiler body 100. The axial extension direction of the roller 32 is approximately perpendicular to the axial extension direction of the boiler body 100. Two sleeves 33 are fixed at both ends of the roller 32, each with a downwardly extending swing arm 331. A sensing unit is fixed on the top of the slide 31 and corresponds to the lower part of at least one swing arm 331. When the sleeve 33 swings around the axis of the roller 32, the swing arm 331 drives the sensitive part of the sensing unit to change a physical quantity, causing the sensing unit to emit a real-time sensing signal. The roller 32 is said to swing because the oscillation angle of the roller 32 rotating around its axis is small, and it does not rotate a large angle in the clockwise or counterclockwise direction and exhibit obvious rotational movement.

[0029] When the boiler body 100 has a significant tendency to slide / move relative to the base 200 in its axial direction, the boiler body 100 can cause the roller 32 to swing around its axis (i.e., a small rotation angle will occur). The more significant the tilt of the boiler body 100 relative to the horizontal plane, the more significant the tendency to drive the roller 32 to swing. That is, when the boiler body 100 has a large tilt relative to the horizontal plane, the more significant the reciprocating movement of the boiler body 100 relative to the base 200 in the axial direction caused by vibration during operation, the higher and larger the frequency and amplitude of the reciprocating swing / swing of the swing arm 331 with the roller 32, the more significant the change in physical quantity of the sensitive part of the sensing unit, and the stronger the real-time sensing signal emitted by the sensing unit. After processing the sensing signal, the sensing unit can convert it into a vibration signal, and can determine whether the tilt of the boiler body 100 relative to the horizontal plane has reached the warning state based on the frequency and amplitude of the vibration signal.

[0030] To increase the contact friction between the roller shaft 32 and the boiler body 100, and to reduce the intensity of mechanical vibration transmitted from the boiler body 100 to the roller shaft 32, thereby minimizing the adverse interference caused by mechanical vibration to monitoring, an elastic layer 322 is fixedly provided on the side of the shaft body 321 of the roller shaft 32. When the roller shaft 32 is close to the boiler body 100, the elastic layer 322 can contact the boiler body 100.

[0031] Two opposing vertical arms 312 are provided on the upper part of the slide block 31. The two ends of the roller shaft 32 are pivotally matched with the two vertical arms 312, so that the roller shaft 32 can rotate relative to the vertical arms 312. The top of the outer peripheral surface of the roller shaft 32 is positioned above the upper end surface of the vertical arms 312.

[0032] Shoulders 3211 are formed on both ends of the shaft body 321 of the roller shaft 32. Prismatic face sections 3212 are formed near the shoulders 3211, and externally threaded face sections 3213 are formed near the prismatic face sections 3212. The sleeve 33 has a prismatic cavity that fits onto the prismatic face section 3212, thus establishing a surface matching relationship with the roller shaft 32. One end of the sleeve 33 is tightly attached to the shoulder 3211. A retaining ring 34 is disposed on the externally threaded face section 3213, allowing the retaining ring 34 to push the sleeve 33 axially against the shoulder 3211, preventing the sleeve 33 from moving axially or rotating circumferentially relative to the shaft body 321, ensuring that the swing arm 331 is vertically downward in the initial state.

[0033] As shown in Figures 3, 6, and 7, the sensing unit includes a U-shaped base 313, a U-shaped connector 332, a grating sensor 35, and a processor module. The grating sensor 35 includes a grating sensor body 351 and a moving grating 352. The selected grating sensor body 351 can be a split structure. The processor module can receive and process the sensing signals fed back by the grating sensor 35. The grating of the grating sensor 35 is the sensitive part.

[0034] The U-shaped base 313 is fixed to the top surface of the slide block 31, so that the two arm plates of the U-shaped base 313 extend upward in the vertical direction and form a large vertical distance between the opposite surfaces.

[0035] The upper U-shaped opening of the U-shaped connector 332 is inserted into the lower end of the swing arm 331 and fixed to the swing arm 331 by bolts. An end plate 3321 is formed at the lower part of the U-shaped connector 332, and the width extension direction of the end plate 3321 is perpendicular to the axial direction of the roller shaft 32. That is, the swing direction of the swing arm 331 is in the width direction of the end plate 3321.

[0036] The end plate 3321 extends into the space between the two arm plates of the U-shaped base 313 (i.e., the vertical distance between the two arm plates), so that both ends of the end plate 3321 are spaced from the opposite end faces of the two arm plates. The two arm plates are a fixed arm plate (not shown in the figure) integrally formed with the U-shaped base 313 and a movable arm plate 3131 fixed to the U-shaped base 313 by bolts. The movable arm plate 3131 is provided with multiple guide posts 3132 that correspond to and match the guide holes on the fixed arm plate, in order to ensure the final assembly position relationship of the two arm plates.

[0037] A strip-shaped slot 3322 is formed on the end plate 3321 at the lower part of the U-shaped connector 332, and the moving grating 352 in the grating sensor 35 is fixed on the end plate 3321, corresponding to the strip-shaped slot 3322. The light source part and the photoelectric element part of the grating sensor body 351 are respectively fixed on the two arm plates and can correspond and match with the moving grating 352, so that light can pass through the strip-shaped slot 3322 and the moving grating 352 and the fixed grating. The U-shaped connector 332 can be fixedly installed on both swing arms 331, but the moving grating 352 and the U-shaped base 313 are only configured on the end plate 3321 of one of the U-shaped connectors 332.

[0038] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit it. Many aspects of this utility model can be improved without departing from the overall concept. Those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A boiler base fixing and connecting device, characterized in that: The assembly includes a mounting base (10) fixed to a crossbar (201a) of a base (200), and an elastic support assembly (20) and a sensing assembly (30) disposed on the mounting base (10). The elastic support assembly (20) includes a plurality of studs (21), and a threaded ring (22), a spring (23), and a nut (24) disposed on each stud (21). The lower end of the stud (21) is fixed to the mounting base (10) and extends vertically. The sensing assembly (30) includes a slide (31), a roller (32), a sleeve (33), and a sensing unit. The slide (31) is provided with through holes corresponding to the studs (21), so that the slide (31) can move vertically relative to the mounting base (10). The spring (23) on the stud (21) can apply an elastic thrust in the vertical direction on the slide (31), and the screw ring (22) can adjust the magnitude of the force of the spring (23) on the slide (31); the roller (32) is pivotally mounted on the upper part of the slide (31) and the top of its outer peripheral surface is in contact with the boiler body (100); the sleeve (33) is fixed on the roller (32) and has a vertically downward extending swing arm (331); the sensing unit is fixed on the top of the slide (31) and corresponds to the lower part of the swing arm (331); when the sleeve (33) swings with the roller (32), the swing arm (331) can drive the sensitive part on the sensing unit to change the physical quantity, so that the sensing unit can emit a real-time sensing signal.

2. The boiler base fixing and connecting device according to claim 1, characterized in that: There are two sleeves (33) and they are fixed at both ends of the roller (32); each sleeve (33) has a vertically downward extending swing arm (331); the sensing unit is located below one of the swing arms (331).

3. The boiler base fixing and connecting device according to claim 1, characterized in that: An elastic layer (322) is fixedly provided on the side of the shaft body (321) of the roller (32); when the roller (32) is close to the boiler body (100), the elastic layer (322) can contact the boiler body (100).

4. The boiler base fixing and connecting device according to claim 1, characterized in that: The thickness of the elastic layer (322) is less than 2 mm.

5. The boiler base fixing and connecting device according to any one of claims 1 to 4, characterized in that: The sensing unit includes a U-shaped base (313), a connector, and a grating sensor (35); the U-shaped base (313) is fixed on the slide (31); the connector is fixed at the lower end of the swing arm (331) and extends between the movable arm plate (3131) and the fixed arm plate of the U-shaped base (313); a strip-shaped slot (3322) is formed at the lower part of the connector and the movable grating (352) in the grating sensor (35) is fixed on the connector and corresponds to the strip-shaped slot (3322); the grating sensor body (351) is fixed on the two arm plates and can correspond to and match the movable grating (352).

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