Thermal power plant deaerator concrete foundation anchoring plate assembly

Abstract

The utility model discloses a thermal power plant deaerator concrete foundation anchor plate assembly which aims to overcome the defects that in the prior art, reserved anchor bars are different in direction and length, the anchor bars and an anchor plate can only be welded together after being straightened and cut neatly, welding is inconvenient due to limited space, and welding quality is difficult to guarantee. The technical problem is solved through the following technical scheme: the primary grouting concrete foundation comprises a primary grouting concrete foundation, wherein a plurality of shearing force grooves are formed in the upper end surface of the primary grouting concrete foundation; the foundation bolts are pre-buried in the primary grouting concrete foundation; a shear key is arranged at the bottom of the bottom plate, and a plurality of bolt holes and grouting holes are formed in the bottom plate in a penetrating manner; the shear key is fixed in the shear groove through the secondary grouting layer, and the foundation bolt penetrates through the bolt hole to be connected with the foundation nut.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the concrete foundation of thermal power plant, more specifically, it relates to a concrete foundation anchoring plate assembly of deaerator of thermal power plant. BACKGROUND

[0002] The deaerator is an important equipment in the thermal power plant, and mainly functions to remove oxygen and other gases in the boiler feed water to ensure the quality of the feed water. The deaerator is a cylindrical equipment, and has a plurality of pipe interfaces outside. Since the volume of the deaerator changes during the heating process, the deaerator usually has a fixed support and 1 to 2 sliding supports. The fixed support is usually fixedly arranged at the middle position of the deaerator, and the sliding supports are supported at other positions of the deaerator.

[0003] In the prior art, an anchoring plate is usually reserved on the top of the concrete foundation as a connecting piece with the deaerator support. The anchoring plate needs to effectively transmit the vertical and horizontal loads of the deaerator to the concrete foundation. Since the anchoring plate needs to have sufficient bearing capacity, the anchoring plate is usually designed as a pre-embedded piece and connected to the concrete foundation by anchor bars. In addition, since the installation precision of the deaerator is high, the anchoring plate cannot achieve the design precision requirements in terms of height and surface flatness if the anchoring plate is once poured in place like a common pre-embedded piece. Therefore, the installation mode of reserving anchor bars by one-time pouring, leveling the anchoring plate, and then welding the anchor bars + secondary grouting is usually used. However, this scheme has the following problems in the execution process:

[0004] (1) The directions and lengths of the reserved anchor bars are different, and the anchor bars can only be welded together after being straightened and cut to size. Moreover, due to the limited space and inconvenient welding, it is difficult to ensure the welding quality.

[0005] (2) The anchor bars are welded to the anchoring plate after the anchoring plate is leveled. During the welding construction process, the position of the anchoring plate is inevitably disturbed, and after the construction is completed, the anchoring plate often cannot achieve a high level of flatness, which will have an adverse effect on the subsequent installation of the deaerator. SUMMARY

[0006] The utility model overcomes the following two aspects'shortcomings of the oxygen removing device concrete foundation anchoring plate in prior art in construction process: (1) the reserved anchorage direction, long and short are not same, can only straighten, cut after the anchorage and anchoring plate are welded together, and because of limited space, welding is inconvenient, it is difficult to guarantee the welding quality; (2) the anchorage plate is welded after leveling, and disturbance is inevitably caused to the position of anchoring plate in the welding construction process, and the anchoring plate often does not reach high level after construction, which will have adverse effect on the installation of oxygen removing device of rear. Provide a kind of oxygen removing device concrete foundation component of thermal power plant, it is embedded anchor bolt before once pouring of concrete foundation, and shear slot is reserved;After once pouring is completed, bottom plate is in place, leveling is carried out, then secondary grouting is carried out, and the installation of anchoring plate is completed after secondary grouting solidification. Welding step in prior art is saved, there is no interference of welding operation, and anchoring plate installation precision is higher.

[0007] In order to solve the above technical problems, the utility model adopts the following technical scheme: a kind of oxygen removing device concrete foundation anchoring plate component of thermal power plant, comprising:

[0008] Once grouting concrete foundation, its upper end is provided with a plurality of shear slots;

[0009] A plurality of anchor bolts are embedded in once grouting concrete foundation;

[0010] Bottom plate, the bottom of which is provided with a shear key, and a plurality of bolt holes and grouting holes are provided through the bottom plate;

[0011] Secondary grouting layer, the shear key is fixed in the shear slot by the secondary grouting layer, and the anchor bolt is connected with anchor nut through the bolt hole.

[0012] Compared with prior art, the anchoring plate no longer uses anchorage, and the anchor bolt is connected with the concrete foundation, which saves the step of welding anchorage in the existing scheme;The anchor bolt is connected with the once grouting concrete foundation, which saves the step of welding anchorage in the prior art, and there is no interference of welding operation, and the bottom plate installation precision is higher;In addition, the anchor bolt mainly bears vertical uplift load, and the bottom plate is provided with shear key for bearing horizontal load.

[0013] Preferably, the shear key is fixed to the bottom of the bottom plate by welding, and the shear key is provided with at least two.

[0014] Providing at least two shear keys can ensure better vertical load and horizontal load performance.

[0015] Preferably, the cross section of the shear key is "I-shaped".

[0016] When the shear key is fixed in the shear groove by the secondary grouting layer, the I-shaped shear key can well resist the load from the horizontal direction and the vertical direction.

[0017] As preferred, at least two grouting holes are provided, and the two grouting holes are arranged along the length direction of the primary grouting concrete foundation.

[0018] When one of the two grouting holes is grouted, the other one is exhausted, so that the grouted concrete can be fully filled, and the quality of the secondary grouting is ensured.

[0019] As preferred, a fixed support is arranged above the bottom plate, a plurality of fixed holes are arranged through the fixed support, and the foundation bolt is connected with the foundation nut after sequentially penetrating through the bolt hole and the fixed hole.

[0020] The fixed support is used for supporting the deaerator, and the deaerator is stably supported. During the supporting process, the upward pulling force at the fixed support is borne by the foundation nut, and the horizontal force is borne by the shear key.

[0021] As preferred, a sliding support is arranged above the bottom plate, and a plurality of roller shafts are arranged between the bottom plate and the bottom of the sliding support.

[0022] The deaerator is arranged on the sliding support, and when the deaerator is expanded and stretched due to heat, the sliding support can slide on the roller shaft, and the frictional force during the sliding process is borne by the shear key.

[0023] As preferred, the bottom plate is a steel plate, and the thickness of the bottom plate is not less than 20 mm.

[0024] The bottom plate should be a steel plate with a thickness not less than 20 mm, so that the mechanical properties meet the requirements, and the thick steel plate is not easy to deform, and better surface flatness can be achieved.

[0025] As preferred, the diameter of the grouting hole is not less than 50 mm.

[0026] The diameter not less than 50 mm can ensure the quality of grouting.

[0027] Compared with the prior art, the anchor plate no longer uses anchor bars, but uses foundation bolts to be connected with the concrete foundation, so that the step of welding the anchor bars in the prior scheme is omitted; the foundation bolts are used to be connected with the primary grouting concrete foundation, so that the step of welding the anchor bars in the prior art is omitted, there is no interference of welding operation, the installation precision of the bottom plate is higher; in addition, the foundation bolt mainly bears the vertical upward load, and the bottom plate is provided with the shear key for bearing the horizontal load. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the top view of the utility model when the fixed support is arranged.

[0029] Figure 2 is the sectional view of the A-A direction of the utility model.

[0030] Figure 3 is the plan view of the utility model when the sliding support is installed.

[0031] Figure 4 is the sectional view of the B-B direction of the utility model.

[0032] In the drawing: 1, primary grouting concrete foundation, 11, shear groove;

[0033] 2, anchor bolt, 21, anchor nut;

[0034] 3, bottom plate, 31, bolt hole, 32, grouting hole;

[0035] 4, shear key;

[0036] 5, secondary grouting layer;

[0037] 6, fixed support, 61, fixed hole;

[0038] 7, sliding support, 71, roller shaft. DETAILED DESCRIPTION

[0039] The technical scheme of the utility model will be further described in detail below by specific embodiments and in conjunction with the drawings:

[0040] Embodiment 1: refer to Figures 1 to 4 the drawing, a kind of power plant deaerator concrete foundation anchoring plate assembly, comprising:

[0041] primary grouting concrete foundation 1, its upper end surface is provided with several shear grooves 11;

[0042] several anchor bolts 2, pre-buried in primary grouting concrete foundation 1;

[0043] bottom plate 3, its bottom is provided with shear key 4, and several bolt holes 31 and grouting holes 32 are provided on bottom plate 3;

[0044] secondary grouting layer 5, shear key 4 is fixed in shear groove 11 by secondary grouting layer 5, anchor bolt 2 passes through bolt hole 31 and is connected with anchor nut 21.

[0045] The upper end surface of primary grouting concrete foundation 1 is provided with several shear grooves 11, and several shear grooves 11 are arranged along the length direction of primary grouting concrete foundation 1. Anchor bolt 2 is pre-buried in primary grouting concrete foundation 1 when pouring.

[0046] The bottom of the bottom plate 3 is provided with shear keys 4 which are fixedly arranged on the bottom of the bottom plate 3 by welding, the number and arrangement direction of the shear keys 4 are matched with the shear grooves 11, and the shear keys 4 can be placed in the shear grooves 11. In order to ensure good performance of resisting vertical load and horizontal load, at least two shear keys 4 are arranged. The cross section of the shear key 4 in the embodiment is in the shape of an I-beam, and when the shear key 4 is fixedly arranged in the shear groove 11 by the secondary grouting layer 5, the I-beam-shaped shear key 4 can well resist load from the horizontal direction and the vertical direction.

[0047] The bottom plate 3 should be made of a steel plate with a thickness of not less than 20 mm to ensure that the mechanical properties meet the requirements, and the thicker steel plate is not easy to deform, and better surface flatness can be achieved.

[0048] The number of the grouting holes 32 on the bottom plate 3 is not less than two, and the two grouting holes 32 are arranged at the two ends in the length direction of the floor, and the diameter is not less than 50 mm. During the grouting process, the two grouting holes 32 can exhaust air while one of them is grouted, so that the grouted concrete can be fully filled to ensure the quality of the secondary grouting. The grouting holes 32 in the embodiment are provided with three, which are uniformly distributed in the length direction of the bottom plate 3.

[0049] The specific implementation process of the embodiment is as follows: first, the primary grouting concrete foundation 1 is poured, the anchor bolts 2 are pre-buried in the first grouting concrete foundation before pouring, and the shear grooves 11 are reserved in the primary grouting concrete foundation 1, then the bottom plate 3 with the welded shear keys 4 is placed on the first grouting concrete foundation 1, the anchor bolts 2 pass through the bolt holes 31, and the bottom plate 3 is leveled. Then the secondary grouting is carried out through the grouting holes 32, the bottom plate 3 is tightly combined with the primary grouting concrete foundation 1 by the secondary grouting layer 5 to become a whole, and the secondary grouting layer 5 fixes the shear keys 4 in the shear grooves 11. Then the fixed support 6 or the sliding support 7 is installed on the bottom plate 3.

[0050] It should be noted that in the specific processing process, the grout for secondary grouting should be non-shrinkage and super-strong secondary grouting material with a 28d compressive strength standard value of not less than 48 MPa. At the same time, the anchor bolts 2 can be matched with leveling nuts to facilitate the leveling of the bottom plate 3.

[0051] Compared with the prior art, the anchor plate no longer uses anchor bars, but uses anchor bolts 2 to connect with the concrete foundation, which saves the step of welding anchor bars in the existing scheme; anchor bolts 2 are used to cooperate with the primary grouting concrete foundation 1, which saves the step of welding anchor bars in the prior art, and there is no interference of welding operation, so that the installation precision of the bottom plate 3 is higher; in addition, the anchor bolts 2 mainly bear the vertical upward load, and the bottom plate 3 is provided with shear keys 4 for bearing horizontal load.

[0052] Embodiment 2: Refer to Figures 1 to 4 As shown in the drawings, a concrete foundation anchoring plate assembly of a power plant deaerator comprises:

[0053] A primary grouting concrete foundation 1 is provided with a plurality of shear slots 11 on the upper end surface thereof;

[0054] A plurality of anchor bolts 2 are embedded in the primary grouting concrete foundation 1;

[0055] A bottom plate 3 is provided with shear keys 4 on the bottom thereof, and a plurality of bolt holes 31 and grouting holes 32 are provided through the bottom plate 3;

[0056] A secondary grouting layer 5 is provided, the shear keys 4 are fixed in the shear slots 11 through the secondary grouting layer 5, and the anchor bolts 2 are connected with anchor nuts 21 through the bolt holes 31.

[0057] The primary grouting concrete foundation 1 is provided with a plurality of shear slots 11 on the upper end surface thereof, and the plurality of shear slots 11 are arranged along the length direction of the primary grouting concrete foundation 1. The anchor bolts 2 are embedded in the primary grouting concrete foundation 1 during pouring.

[0058] The bottom plate 3 is provided with shear keys 4 on the bottom thereof, the shear keys 4 are fixed on the bottom of the bottom plate 3 by welding, the number and arrangement direction of the shear keys 4 are matched with the shear slots 11, and the shear keys 4 can be placed in the shear slots 11. In order to ensure good performance of resisting vertical load and horizontal load, at least two shear keys 4 are arranged. In this embodiment, the shear keys 4 are in the shape of an I-beam, and when the shear keys 4 are fixed in the shear slots 11 through the secondary grouting layer 5, the I-beam-shaped shear keys 4 can well resist the load from the horizontal direction and the vertical direction.

[0059] The bottom plate 3 should be made of a steel plate with a thickness of not less than 20 mm to ensure that its mechanical properties meet the requirements, and the thick steel plate is not easy to deform and can achieve better surface flatness.

[0060] The number of grouting holes 32 on the bottom plate 3 is not less than two, and the two grouting holes 32 are arranged at the two ends of the length direction of the floor, and the diameter is not less than 50 mm. During grouting, the two grouting holes 32 can be used for grouting and exhaust at the same time, so that the grouted concrete can be fully filled to ensure the quality of secondary grouting. In this embodiment, three grouting holes 32 are arranged, and the three grouting holes 32 are evenly distributed along the length direction of the bottom plate 3.

[0061] The difference between the embodiment and embodiment 1 is that a fixed support 6 is arranged above the bottom plate 3, a plurality of fixed holes 61 are arranged through the fixed support 6, and the anchor bolt 2 is connected with the anchor nut 21 after passing through the bolt hole 31 and the fixed hole 61 in sequence. The fixed support 6 is used for supporting the deaerator and plays a stable supporting role for the deaerator. In the supporting process, the upward pulling force at the fixed support 6 is borne by the anchor bolt 2, and the horizontal force is borne by the shear key 4.

[0062] The specific implementation process of the embodiment is as follows: first, the primary grouting concrete foundation 1 is poured, the anchor bolt 2 is pre-buried in the first grouting concrete foundation before pouring, and the shear groove 11 is reserved in the primary grouting concrete foundation 1, then the bottom plate 3 with the welded shear key 4 is placed on the first grouting concrete foundation 1, the anchor bolt 2 passes through the bolt hole 31, and the bottom plate 3 is leveled. Then, the secondary grouting is carried out through the grouting hole 32, and the secondary grouting layer 5 is formed between the bottom plate 3 and the primary grouting concrete foundation 1, and the secondary grouting layer 5 fixes the shear key 4 in the shear groove 11. Then, the fixed support 6 or the sliding support 7 is installed on the bottom plate 3.

[0063] It should be noted that in the specific processing process, the grout for secondary grouting should be non-shrinkage and super-strong secondary grouting material, and the 28d compressive strength standard value should not be less than 48MPa. At the same time, the anchor bolt 21 can be matched with a leveling nut to facilitate the leveling of the bottom plate 3.

[0064] Compared with the prior art, the anchor plate no longer uses anchor bars, but uses anchor bolts 2 to connect with the concrete foundation, which saves the step of welding anchor bars in the existing scheme; the anchor bolt 2 is used to connect with the primary grouting concrete foundation 1, which saves the step of welding anchor bars in the prior art, has no interference of welding operation, and has higher installation precision of the bottom plate 3; in addition, the anchor bolt 2 mainly bears the vertical upward load, and the bottom plate 3 is provided with the shear key 4 for bearing the horizontal load.

[0065] Embodiment 3: refer to Figures 1 to 4 As shown in the figure, a kind of deaerator concrete foundation anchor plate assembly of thermal power plant, comprising:

[0066] Primary grouting concrete foundation 1, the upper end of which is provided with a plurality of shear grooves 11;

[0067] A plurality of anchor bolts 2 are pre-buried in the primary grouting concrete foundation 1;

[0068] Bottom plate 3, the bottom of which is provided with a shear key 4, and a plurality of bolt holes 31 and grouting holes 32 are arranged through the bottom plate 3;

[0069] Secondary grouting layer 5, the shear key 4 is fixed in the shear groove 11 through the secondary grouting layer 5, and the anchor bolt 2 is connected with the anchor nut 21 through the bolt hole 31.

[0070] The upper end surface of the once grouting concrete foundation 1 is provided with a plurality of shear grooves 11, and the plurality of shear grooves 11 are arranged along the length direction of the once grouting concrete foundation 1. When pouring the once grouting concrete foundation 1, the anchor bolt 2 is pre-buried in the once grouting concrete foundation 1.

[0071] The bottom of the bottom plate 3 is provided with shear keys 4, which are fixedly arranged on the bottom of the bottom plate 3 by welding, and the number and arrangement direction of the shear keys 4 are matched with the shear grooves 11, and the shear keys 4 can be placed in the shear grooves 11. In order to ensure that it has good performance of resisting vertical load and horizontal load, at least two shear keys 4 are arranged. The cross section of the shear key 4 in the embodiment is I-shaped, and when the shear key 4 is fixedly arranged in the shear groove 11 by the secondary grouting layer 5, the I-shaped shear key 4 can well resist the load from the horizontal direction and the vertical direction.

[0072] The bottom plate 3 should adopt a steel plate with a thickness not less than 20 mm to ensure that its mechanical properties meet the requirements, and the thicker steel plate is not easy to deform, which can achieve better surface flatness.

[0073] The number of grouting holes 32 on the bottom plate 3 is not less than two, and the two grouting holes 32 are arranged at the two ends of the length direction of the floor, and the diameter is not less than 50 mm. During the grouting process, when one of the two grouting holes 32 is grouting, the other one is exhausting, so that the grouting concrete can be fully filled to ensure the quality of the secondary grouting. The grouting hole 32 in the embodiment is provided with three, which are uniformly distributed in the length direction of the bottom plate 3.

[0074] A fixed support 6 is arranged above the bottom plate 3, a plurality of fixed holes 61 are arranged through the fixed support 6, and the anchor bolt 2 is connected with the anchor nut 21 after passing through the bolt hole 31 and the fixed hole 61 in sequence. The fixed support 6 is used for supporting the deaerator and plays a stable supporting role for the deaerator. During the supporting process, the upward pulling force at the fixed support 6 is borne by the anchor bolt 2, and the horizontal force is borne by the shear key 4.

[0075] The difference between the embodiment and the embodiment 1 or the embodiment 2 is that a sliding support 7 is arranged above the bottom plate 3, and a plurality of roller shafts 71 are arranged between the bottom plate 3 and the bottom of the sliding support 7. The deaerator is arranged on the sliding support 7, and when the deaerator expands and stretches due to heat, the sliding support 7 can slide on the roller shaft 71, and the frictional force in the sliding process is borne by the shear key 4.

[0076] The specific implementation process of the embodiment is as follows: first, the primary grouting concrete foundation 1 is poured, the anchor bolt 2 is pre-buried in the first grouting concrete foundation before pouring, and the shear groove 11 is reserved in the primary grouting concrete foundation 1, then the bottom plate 3 welded with the shear key 4 is placed on the first grouting concrete foundation 1, the anchor bolt 2 passes through the bolt hole 31, and the bottom plate 3 is leveled. Then, the secondary grouting is carried out through the grouting hole 32, the secondary grouting layer 5 is formed between the bottom plate 3 and the primary grouting concrete foundation 1, and the secondary grouting layer 5 fixes the shear key 4 in the shear groove 11. Then, the fixed support 6 or the sliding support 7 is installed on the bottom plate 3.

[0077] It should be noted that in the specific processing process, the grout of the secondary grouting should use non-shrinkage and super-strong secondary grouting material, and the 28d compressive strength standard value is not less than 48MPa. At the same time, the anchor bolt 2 can be matched with a leveling nut to facilitate the leveling of the bottom plate 3.

[0078] Compared with the prior art, the anchor plate no longer uses anchor bars, but uses anchor bolts 2 to connect with the concrete foundation, which saves the step of welding anchor bars in the existing scheme; the anchor bolt 2 is used to cooperate and connect with the primary grouting concrete foundation 1, which saves the step of welding anchor bars in the prior art, without the interference of welding operation, and the installation precision of the bottom plate 3 is higher; in addition, the anchor bolt 2 mainly bears the vertical upward load, and the bottom plate 3 is provided with the shear key 4 to bear the horizontal load.

[0079] The above-described embodiment is only a preferred scheme of the present application, and does not limit the present application in any form, and there are other variants and modifications without exceeding the technical scheme recorded in the claims.

Claims

1. A power plant deaerator concrete foundation anchorage plate assembly characterized by, The utility model relates to a foundation structure of a building, which comprises: a primary grouting concrete foundation, the upper end surface of which is provided with a plurality of shear slots; a plurality of anchor bolts, which are embedded in the primary grouting concrete foundation; a bottom plate, the bottom of which is provided with shear keys, and a plurality of bolt holes and grouting holes are formed through the bottom plate; a secondary grouting layer, the shear keys being fixed in the shear slots through the secondary grouting layer, and the anchor bolts being connected with anchor nuts through the bolt holes.

2. The power plant deaerator concrete foundation anchor plate assembly of claim 1, wherein, The shear keys are fixed to the bottom of the bottom plate by welding, and at least two shear keys are provided.

3. The power plant deaerator concrete foundation anchor plate assembly of claim 1, wherein, The cross section of the shear keys is "I-shaped".

4. The power plant deaerator concrete foundation anchor plate assembly of claim 1, wherein, At least two grouting holes are provided, and the two grouting holes are arranged along the length direction of the primary grouting concrete foundation.

5. The anchorage plate assembly for the deaerator concrete foundation of a thermal power plant according to any one of claims 1 to 4, characterized in that, A fixed support is arranged above the bottom plate, a plurality of fixing holes are formed through the fixed support, and the anchor bolts are connected with the anchor nuts after sequentially passing through the bolt holes and the fixing holes.

6. The anchorage plate assembly for the deaerator concrete foundation of a thermal power plant according to any one of claims 1 to 4, characterized in that, A sliding support is arranged above the bottom plate, and a plurality of rollers are arranged between the bottom plate and the bottom of the sliding support.

7. The anchorage plate assembly for the deaerator concrete foundation of a thermal power plant according to any one of claims 1 to 4, characterized in that, The bottom plate is a steel plate, and the thickness of the bottom plate is not less than 20 mm.

8. The power plant deaerator concrete foundation anchor plate assembly of claim 4 wherein, The diameter of the grouting hole is not less than 50 mm.

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