Jacking device for pressure test of cooling wall of blast furnace

Abstract

The utility model discloses a jacking device for blast furnace cooling wall pressure test, which relates to the technical field of blast furnace cooling wall pressure test, and comprises a cooling water pipe, a pressing plate is arranged at any end of the cooling water pipe, a first through hole is formed in the pressing plate, a rubber mat is clamped between the pressing plate and the cooling water pipe, a second through hole is formed in the rubber mat, and the first through hole is communicated with the second through hole. The end, away from the rubber mat, of the pressing plate is fixedly connected with a connecting pipe. The connecting pipe, the first through hole, the second through hole and the cooling water pipe are sequentially communicated and form a closed channel. A positioning plate is movably arranged on the outer wall of the cooling water pipe, the positioning plate is provided with a fastening piece used for being fixed to the cooling water pipe, and a tensioning piece is arranged between the positioning plate and the pressing plate; in a working state, the two ends of the tensioning piece tension the pressing plate and the positioning plate, so that the two ends of the rubber mat abut against the pressing plate and the cooling water pipe respectively, and it is guaranteed that the pressure testing process is stably achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace cold wall pressure testing, in particular to a jacking device for blast furnace cooling wall pressure testing. Background Art

[0002] The walls of blast furnaces are all equipped with water-cooled cooling staves. The cooling staves are divided into iron cooling staves and copper cooling staves. The interior of the cooling staves is composed of curved water pipes. When cooling, clean cooling water is sent into the water pipes to achieve the effect of cooling the blast furnace. Therefore, the most important inspection indicator of the blast furnace cooling stave pressure test device is that the internal cooling water pipes do not leak or bubble under the design pressure.

[0003] The patent document with the patent publication number CN211121791U proposes a blast furnace cooling wall pressure test pipe head sealing device. The patent adopts cylindrical rubber plugs and quick connectors to achieve quick connection and stable pressure test, but the pressure bearing capacity of the colloid is weak. Under high pressure, it may not be sealed tightly, and the stability and safety are low. In addition, the cylindrical rubber plug is suitable for small-diameter pipes, and the cost of the colloid will increase compared to large-diameter pipes, and the general applicability of the entire device is low. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the technical problem to be solved by the utility model is: how to improve the stability and applicability of a blast furnace cold wall pressure testing device.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A tightening device for pressure testing of a blast furnace cooling wall comprises a cooling water pipe, a clamping plate is arranged at either end of the cooling water pipe, the clamping plate is provided with a first through hole, a rubber pad is clamped between the clamping plate and the cooling water pipe, the rubber pad is provided with a second through hole, a connecting pipe is fixedly connected to the end of the clamping plate away from the rubber pad, the connecting pipe, the first through hole, the second through hole and the cooling water pipe are connected in sequence to form a closed passage; a positioning plate is movably arranged on the outer wall of the cooling water pipe, the positioning plate is provided with a fastener for fixing to the cooling water pipe, and a tensioning member is arranged between the positioning plate and the clamping plate; in a working state, the two ends of the tensioning member tighten the clamping plate and the positioning plate, so that the two ends of the rubber pad respectively abut against the clamping plate and the cooling water pipe.

[0007] Furthermore, the positioning plate includes a positioning disk movably sleeved on the outer side of the cooling water pipe.

[0008] Furthermore, the fastener includes a positioning nut connected to the positioning plate, the axis of the positioning nut is perpendicular to the axis of the cooling water pipe, a tightening bolt is threadedly sleeved in the positioning nut, and the screwed-in end of the tightening bolt abuts against the outer wall of the cooling water pipe.

[0009] Furthermore, the positioning nuts and the tightening bolts that cooperate with each other are provided in multiple groups.

[0010] Furthermore, the tensioning member includes a plurality of clamping bolts connected between the clamping plate and the positioning plate, and the plurality of clamping bolts are distributed circumferentially along the axis of the cooling water pipe.

[0011] Furthermore, the connecting pipe comprises a joint pipe welded to the surface of the clamping plate, one end of the joint pipe away from the clamping plate is threadedly sleeved with a quick connector, and one end of the quick connector away from the joint pipe is connected to a hose.

[0012] The beneficial effects of the utility model are:

[0013] The tightening effect between the clamping plate and the positioning plate can ensure the stability of the connection and the stability of the device under a large water pressure. The tightening effect acts on the rubber pad to ensure good sealing of the pressure test passage. The positioning plate is movably arranged on the cooling water pipe and the tightening effect is adjusted by fasteners. It is easy to operate and can be conveniently used on cooling water pipes of other sizes, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is a left view of the utility model;

[0016] Figure 3 This is a schematic diagram of the connection structure of the pressing plate of the utility model;

[0017] Figure 4 It is a top view of the utility model;

[0018] Marked in the figure, 1-cooling water pipe, 2-connecting pipe, 3-positioning plate, 4-pressure plate, 5-tensioning bolt, 6-positioning nut, 7-pressure bolt, 8-rubber pad, 9-hose. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] according to Figure 1-Figure 4As shown, the embodiment of the present application proposes a tightening device for pressure testing of a blast furnace cooling wall, including a cooling water pipe 1, a clamping plate 4 is provided at either end of the cooling water pipe 1, the clamping plate 4 is provided with a first through hole, a rubber pad 8 is clamped between the clamping plate 4 and the cooling water pipe 1, the rubber pad 8 is provided with a second through hole, and the clamping plate 4 is fixedly connected with a connecting pipe 2 at one end away from the rubber pad 8, the connecting pipe 2, the first through hole, the second through hole and the cooling water pipe 1 are connected in sequence and form a closed passage; a positioning plate 3 is movably provided on the outer wall of the cooling water pipe 1, the positioning plate 3 is provided with a fastener for fixing to the cooling water pipe 1, and a tensioning member is provided between the positioning plate 3 and the clamping plate 4; in a working state, the two ends of the tensioning member tighten the clamping plate 4 and the positioning plate 3, so that the two ends of the rubber pad 8 respectively abut against the clamping plate 4 and the cooling water pipe 1.

[0021] It should be noted that the tensioning effect between the clamping plate 4 and the positioning plate 3 can ensure the firmness of the connection and the stability of the device under a large water pressure, and acts on the rubber pad 8 through the tensioning effect to ensure good sealing of the pressure test passage. The positioning plate 3 is movably arranged on the cooling water pipe 1 and the fastening effect is adjusted by fasteners, which can be conveniently operated and can be conveniently used on cooling water pipes 1 of other sizes, thereby improving the applicability of the device.

[0022] The cooling water pipe 1 is specifically an outlet pipe extending outward through the cooling wall, and the specific positioning plate 3 can be a plate that is not in direct contact with the cooling water pipe 1. The plate can be directly clamped or fixed at a reasonable position of the cooling water pipe 1 through an adjustable clamping structure. Specifically, the positioning plate 3 includes a positioning plate that is movably sleeved on the outside of the cooling water pipe 1, and the inner diameter of the through hole in the center of the positioning plate is larger than the outer diameter of the general cooling water pipe 1, ensuring that the positioning plate can be suitable for cooling water pipes 1 of most specifications. Specifically, the positioning plate is made of a steel plate with a thickness of 12 mm. The steel plate is made of conventional material Q235, adopts a circular design, is hollowed out in the middle, and is sleeved on the outer surface of the pressure test pipe. The hollowed-out circle in the middle is slightly larger than the diameter of the pressure test pipe by 5mm, and the positioning plate is guaranteed not to arbitrarily deviate from the position of the cooling water pipe 1 laterally, and the above-mentioned fastener includes a positioning nut 6 connected to the above-mentioned positioning plate 3, and the axis of the above-mentioned positioning nut 6 is perpendicular to the axis of the above-mentioned cooling water pipe 1, and a tightening bolt 5 is threadedly sleeved in the above-mentioned positioning nut 6, and the screwed-in end of the above-mentioned tightening bolt 5 abuts against the outer wall of the above-mentioned cooling water pipe 1. During the specific positioning process, after the positioning plate is moved to a reasonable position of the cooling water pipe 1, the above-mentioned tightening bolt 5 is rotated, and the tightening bolt 5 is screwed in along the positioning nut 6. When the tightening bolt 5 stably abuts against the outer wall of the cooling water pipe 1, the positioning plate is fixed to the outer wall of the cooling water pipe 1.

[0023] In order to improve the range of action and abutment stability of the above-mentioned tightening bolts 5, the above-mentioned positioning nuts 6 and the above-mentioned tightening bolts 5 that cooperate with each other are multiple groups, and can be arranged around the axial direction of the positioning plate to ensure stability. Preferably, the above-mentioned positioning nuts 6 and the above-mentioned tightening bolts 5 that cooperate with each other are 3 groups, and the angle between adjacent above-mentioned tightening bolts 5 is 120 degrees. While ensuring a better tightening effect, it avoids reducing the installation efficiency due to too many bolt structures.

[0024] After completing the positioning and fixation of the positioning plate 3, it is necessary to use a tensioning member to tighten the positioning plate 3 and the clamping plate 4. Specifically, the tensioning member includes a plurality of clamping bolts 7 connected between the clamping plate 4 and the positioning plate 3. The plurality of clamping bolts 7 are circumferentially distributed along the axis of the cooling water pipe 1, and the plurality of clamping bolts 7 are evenly spaced along the circumference of the cooling water pipe 1 to ensure that under the tensioning action, the two ends of the rubber pad 8 are more evenly abutted by the cooling water pipe 1 and the clamping plate to prevent the clamping plate 4 from tilting under the tensioning action, which leads to a decrease in the sealing performance of the rubber pad 8 under compression. The rubber pad 8 specifically adopts a rubber pad 8 with a thickness of 3mm, and under the tensioning force of the clamping bolts 7, the two ends of the rubber pad 8 undergo elastic deformation to adjust the poor sealing caused by some uneven pipe openings.

[0025] In order to prevent deformation due to pressure, the clamping plate 4 is made of a steel plate with a thickness of 12 mm. The steel plate is made of conventional material Q235, and the overall dimensions are determined according to the size of the cooling water pipe 1. Most cooling water pipes 1 use DN65 pipes, so the overall dimensions of the steel clamping plate are: 80×140 square plate, a hole is dug in the middle and the joint of the connecting pipe 2 is welded, and the clamping bolt 7 is inserted after the hole is dug. Preferably, a circular steel clamping plate can be used to facilitate the arrangement of the clamping bolt 7. Generally, the bolt head of the clamping bolt 7 faces downward and is used to abut the bottom end of the positioning plate 3, and the entering portion of the clamping bolt 7 extends upward through the clamping plate 4 and the matching nut thread is connected to the above-mentioned entering portion and abuts the upper end of the clamping plate 4 to achieve a stable tightening effect.

[0026] The connecting pipe 2 includes a joint pipe welded on the surface of the clamping plate 4. The end of the joint pipe away from the clamping plate 4 is threadedly sleeved with a quick connector, and the end of the quick connector away from the joint pipe is connected with a hose 9. The joint pipe adopts a metal double-wire flexible joint, and the size of the end of the joint pipe away from the clamping plate 4 is adapted to the hose 9. The hose 9 is used as a temporary connecting pipe to ensure that the entire pressure test circuit is unobstructed.

[0027] In summary, the utility model proposes a tightening device for pressure testing of a blast furnace cooling wall, comprising a cooling water pipe 1, a clamping plate 4 is arranged at either end of the cooling water pipe 1, the clamping plate 4 is provided with a first through hole, a rubber pad 8 is clamped between the clamping plate 4 and the cooling water pipe 1, the rubber pad 8 is provided with a second through hole, the end of the clamping plate 4 away from the rubber pad 8 is fixedly connected with a connecting pipe 2, the connecting pipe 2, the first through hole, the second through hole and the cooling water pipe 1 are connected in sequence to form a closed passage; a positioning plate 3 is movably arranged on the outer wall of the cooling water pipe 1, the positioning plate 3 is provided with a fastener for fixing with the cooling water pipe 1, the positioning plate 3 and the pressure A tensioning member is arranged between the tightening plates 4; in the working state, the two ends of the tensioning member tighten the clamping plate 4 and the positioning plate 3, so that the two ends of the rubber pad 8 respectively abut against the clamping plate 4 and the cooling water pipe 1, and the tensioning effect between the clamping plate 4 and the positioning plate 3 can ensure the stability of the connection and the stability of the device under a large water pressure, and the tensioning effect acts on the rubber pad 8 to ensure the good sealing of the pressure test passage, and the positioning plate 3 is movably arranged on the cooling water pipe 1 and the tightening effect is adjusted by the fasteners, which can be convenient to operate and can be conveniently used on cooling water pipes 1 of other sizes, thereby improving the applicability of the device, and the whole structure is simple and easy to process, with low cost.

Claims

1. A tightening device for blast furnace cooling wall pressure testing, characterized in that: The cooling water pipe (1) comprises a cooling water pipe (1), wherein a clamping plate (4) is provided at either end of the cooling water pipe (1), wherein the clamping plate (4) is provided with a first through hole, wherein a rubber pad (8) is clamped between the clamping plate (4) and the cooling water pipe (1), wherein the rubber pad (8) is provided with a second through hole, wherein the end of the clamping plate (4) away from the rubber pad (8) is fixedly connected with a connecting pipe (2), wherein the connecting pipe (2), the first through hole, the second through hole and the cooling water pipe (1) are sequentially connected to form a closed passage; wherein a positioning plate (3) is movably provided on the outer wall of the cooling water pipe (1), wherein the positioning plate (3) is provided with a fastener for fixing to the cooling water pipe (1), and a tensioning member is provided between the positioning plate (3) and the clamping plate (4); wherein in a working state, the two ends of the tensioning member tighten the clamping plate (4) and the positioning plate (3), so that the two ends of the rubber pad (8) respectively abut against the clamping plate (4) and the cooling water pipe (1).

2. The blast furnace cooling wall pressure test tightening device according to claim 1, characterized in that: The positioning plate (3) is a positioning disk movably sleeved on the outside of the cooling water pipe (1).

3. The blast furnace cooling wall pressure test tightening device according to claim 2, characterized in that: The fastener comprises a positioning nut (6) connected to the positioning plate (3), the axis of the positioning nut (6) being perpendicular to the axis of the cooling water pipe (1), a tightening bolt (5) being threadedly sleeved in the positioning nut (6), and the screwed-in end of the tightening bolt (5) abutting against the outer wall of the cooling water pipe (1).

4. The blast furnace cooling wall pressure test tightening device according to claim 3, characterized in that: There are multiple positioning nuts (6) and multiple tightening bolts (5), and the multiple positioning nuts (6) and the multiple tightening bolts (5) correspond one to one.

5. The blast furnace cooling wall pressure test tightening device according to claim 3, characterized in that: The tensioning member comprises a plurality of clamping bolts (7) connected between the clamping plate (4) and the positioning plate (3), and the plurality of clamping bolts (7) are distributed circumferentially along the axis of the cooling water pipe (1).

6. The blast furnace cooling wall pressure test tightening device according to claim 1, characterized in that: The connecting pipe (2) comprises a joint pipe welded to the clamping plate (4), one end of the joint pipe away from the clamping plate (4) is threadedly sleeved with a quick connector, and one end of the quick connector away from the joint pipe is connected to a hose (9).

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