A blast furnace coal injection gun with an anti-falling structure

Abstract

The invention relates to a blast furnace coal injection gun with an anti-falling-off structure. By setting an anti-falling-off component, on the one hand, the connection between a hose and a gas supply pipe can be reinforced, so that the stability of the connection is higher and the possibility of the hose falling off is reduced. On the other hand, when the hose is loose but not detached, the extent of its loosening can squeeze a sensing ring, thereby triggering an audible and visual alarm to alarm. Compared with the prior art, when the hose is not detached but only loose, an abnormality warning can be issued, which can effectively ensure that the staff can take corresponding handling measures for the abnormal situation in time, and can also greatly reduce the leakage of gas, or make the abnormality be handled when the gas is not leaking, thereby greatly reducing safety hazards and being less likely to cause fire or explosion.

Description

Technical Field

[0001] The invention relates to a blast furnace coal injection gun, in particular to a blast furnace coal injection gun with an anti-falling structure applied in the technical field of coal injection. Background Art

[0002] The coal injection gun is one of the important equipment of the blast furnace coal injection system. It is made of heat-resistant seamless steel pipes and is divided into two types according to the different injection media: ordinary coal injection guns and oxygen coal injection guns. The coal injection medium of ordinary coal injection guns is compressed air, while that of oxygen coal guns is oxygen.

[0003] The mouth of the gas supply pipe on the coal injection gun is generally connected to a hose. However, due to the effect of gas pressure, the hose is prone to fall off. In the prior art, the way to deal with it is often to close the coal gun valve and the valve on the coal supply pipe after the hose has fallen off. This method often has certain safety hazards. When the hose detachment is not discovered in time, gas leakage is likely to occur. When the leakage is large and encounters combustibles, there is a safety hazard of causing fire or explosion. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the hose is often not processed accordingly until it falls off, and if the falling off is not discovered in time, there is a safety hazard of causing fire or explosion.

[0005] In order to solve the above problems, the present invention provides a blast furnace coal injection gun with an anti-falling structure, including a coal injection gun body, a gun barrel fixedly connected to the lower end of the coal injection gun body, a nozzle installed at the lower end of the gun barrel, two air supply pipes fixedly connected to the upper end of the coal injection gun body, an electromagnetic valve connected to the air supply pipe, a hose threadedly connected to the end of the air supply pipe, an anti-falling component connected between the hose and the air supply pipe, the anti-falling component includes a pipe-following ring fixedly connected to the end of the hose, a limiting ring fixedly connected to the outer end of the air supply pipe, and a follow-up movable ring sleeved outside the air supply pipe, the follow-up movable ring is located between the limiting ring and the electromagnetic valve, the pipe-following ring and the follow-up movable ring are fastened and connected by two upper and lower corresponding screws, and the screw passes through the limiting ring, a sensing ring is also sleeved outside the air supply pipe, the sensing ring is located between the follow-up movable ring and the limiting ring, and the sensing ring conflicts with the two, and an audible and visual alarm is also installed outside the air supply pipe.

[0006] In the above-mentioned blast furnace coal injection gun with an anti-falling structure, by setting the anti-falling component, on the one hand, the connection between the hose and the gas supply pipe can be strengthened, so that the connection is more stable and the possibility of the hose falling off is reduced; on the other hand, when the hose is loose but not yet detached, the extent of its loosening can cause the sensing ring to be squeezed, thereby triggering the sound and light alarm. Compared with the prior art, when the hose has not fallen off but is only loose, an abnormal warning can be issued, thereby greatly reducing safety hazards.

[0007] As a further improvement of the present application, the outer diameter of the sensing ring is smaller than the distance between the ends of the two screws that are close to each other.

[0008] As a further improvement of the present application, the sensing ring includes an elastic segment and a spacer ring fixedly embedded in the middle of the elastic segment. Empty grooves are opened at both ends of the elastic segment. The two empty grooves are symmetrical about the axis of the center point of the elastic segment. Two pressure-touch rods corresponding to the two empty grooves are also fixedly embedded in the elastic segment. A pressure sensor is provided in the empty groove, and the pressure sensor is installed on the spacer ring.

[0009] As a further improvement of the present application, the end of the pressure contact rod extends into the empty groove, the end of the pressure contact rod faces the pressure sensor, and there is a gap between the two.

[0010] As another improved supplement of the present application, the left and right inner walls of the empty slot are respectively located on the left and right sides of the spacer ring, and the pressure contact rod movably penetrates the spacer ring and extends to the other side of the spacer ring.

[0011] As another improved supplement of the present application, the pressure contact rod includes a large diameter section and a small diameter section located in the empty slot, the connection between the large diameter section and the small diameter section is located in the empty slot, and the small diameter section passes through the spacer ring.

[0012] As another improvement supplement of the present application, the distance between the end of the small diameter segment and the display concave strip is smaller than the distance between the end of the large diameter segment and the surface of the spacer ring.

[0013] As another improvement supplement to the present application, an annular conductive sheet is embedded on the end face of the large diameter section, the annular conductive sheet is located on the outside of the small diameter section, and fixed conductive sheets are attached to the left and right end faces of the spacer ring. The fixed conductive sheet corresponds to the annular conductive sheet, and the two annular conductive sheets are electrically connected.

[0014] As another improved supplement of the present application, the two annular conductive sheets are connected in series to the control circuit of the sound and light alarm. When the two annular conductive sheets are in contact with the two fixed conductive sheets respectively, the control circuit of the sound and light alarm is turned on, causing the sound and light alarm to issue a warning of hose looseness.

[0015] In summary, in the above-mentioned blast furnace coal injection gun with an anti-falling structure, through the provision of the anti-falling component, on the one hand, the connection between the hose and the gas supply pipe can be strengthened, so that the connection is more stable and the possibility of the hose falling off is reduced; on the other hand, when the hose is loose but not detached, the extent of its loosening can cause the sensing ring to be squeezed, thereby triggering the sound and light alarm to alarm. Compared with the prior art, when the hose has not fallen off but is only loose, an abnormality warning can be issued, which can effectively ensure that the staff can take corresponding measures to deal with the abnormal situation in time, and can also greatly reduce the amount of gas leakage, or make the abnormality have been dealt with when the gas has not leaked, thereby greatly reducing safety hazards and making it less likely to cause fire or explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of the first embodiment of the present application;

[0017] Figure 2 This is a partial schematic diagram of the connection between the air supply pipe and the hose in the first embodiment of the present application;

[0018] Figure 3 It is a partial schematic diagram of the connection between the air supply pipe and the hose in the prior art;

[0019] Figure 4 This is an exploded view of the anti-slip component part in the first embodiment of the present application;

[0020] Figure 5 This is a cross-sectional schematic diagram of the first embodiment of the present application when the hose and the air supply pipe are not connected;

[0021] Figure 6 This is a cross-sectional schematic diagram of the first embodiment of the present application after the hose and the air supply pipe are connected;

[0022] Figure 7 This is a schematic diagram of a situation in which the connection between the hose and the air supply pipe is loosened, causing the sensing ring to be squeezed, in the first embodiment of the present application;

[0023] Figure 8 This is a cross-sectional view of the sensing ring of the first embodiment of the present application;

[0024] Fig. 9 This is a schematic diagram of a sensing ring according to a second embodiment of the present application;

[0025] Fig.10 This is a schematic diagram of the cross section of the sensing ring after the hose is installed on the air supply pipe in the second embodiment of the present application;

[0026] Fig.11 Schematic diagram of the spacer ring in the second embodiment.

[0027] Description of the numbers in the figure:

[0028] 1 coal injection gun body, 2 gun barrel, 3 nozzle, 4 air supply pipe, 5 hose, 6 anti-drop assembly, 61 pipe ring, 62 drop-off movable ring, 63 screw, 64 limit ring, 7 sensing ring, 71 elastic section, 72 spacer ring, 721 fixed conductive sheet, 73 pressure contact rod, 701 empty slot, 702 pressure sensor, 74 display concave strip, 8 sound and light alarm. DETAILED DESCRIPTION

[0029] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0030] The first implementation method:

[0031] Figure 1-2 A blast furnace coal injection gun with an anti-dropping structure is shown. In the figure, a represents a solenoid valve, which includes a coal injection gun body 1. The lower end of the coal injection gun body 1 is fixedly connected to a gun barrel 2, and a nozzle 3 is installed at the lower end of the gun barrel 2. Two air supply pipes 4 are fixedly connected to the upper end of the coal injection gun body 1, and the air supply pipe 4 is connected to the solenoid valve. The end of the air supply pipe 4 is threadedly connected to a hose 5, and an anti-dropping component 6 is connected between the hose 5 and the air supply pipe 4.

[0032] like Figure 4-5 The anti-slip assembly 6 includes a tube ring 61 fixedly connected to the end of the hose 5, a limit ring 64 fixedly connected to the outer end of the air supply pipe 4, and a movable ring 62 sleeved outside the air supply pipe 4. The movable ring 62 is located between the limit ring 64 and the solenoid valve. Figure 6 The tube ring 61 and the movable ring 62 are fastened together by two upper and lower corresponding screws 63, and the screw 63 passes through the limiting ring 64. A sensing ring 7 is also sleeved on the outside of the air supply pipe 4. The sensing ring 7 is located between the movable ring 62 and the limiting ring 64, and the sensing ring 7 conflicts with the two. An audible and visual alarm 8 is also installed outside the air supply pipe 4.

[0033] The outer diameter of the sensing ring 7 is smaller than the distance between the ends of the two screw rods 63 that are close to each other, so that the sensing ring 7 is not likely to affect the connection between the screw rod 63 and the follower ring 61 and the screw rod 63 .

[0034] like Figure 8 The sensing ring 7 includes an elastic section 71 and a spacer ring 72 fixedly embedded in the middle of the elastic section 71. Empty grooves 701 are opened at both ends of the elastic section 71. The two empty grooves 701 are symmetrical about the center point of the elastic section 71. Two pressure-touch rods 73 corresponding to the two empty grooves 701 are fixedly embedded in the elastic section 71. A pressure sensor 702 is provided in the empty groove 701. The pressure sensor 702 is installed on the spacer ring 72. The end of the pressure-touch rod 73 extends into the empty groove 701, and the end of the pressure-touch rod 73 faces the pressure sensor 702.

[0035] During installation, the follow-up ring 62 and the limit ring 64 are controlled to clamp and contact the sensing ring 7. At the same time, during this operation, the pressure sensor 702 should always be kept from generating force data, and there should be a gap between the pressure-touch rod 73 and the pressure sensor 702. When the hose 5 is loose, the hose 5 will be subjected to a force that tends to separate from the air supply pipe 4 due to the pressure of the gas in the hose 5. Figure 7 , thereby driving the follow-up ring 62 to move toward the side of the follow-up ring 61 through the screw 63, so that the sensing ring 7 is squeezed. When the squeezing force is relatively large, the sensing ring 7 is deformed greatly, causing the pressure-touch rod 73 to contact the pressure sensor 702, causing it to generate force data, thereby triggering the sound and light alarm 8 to alarm.

[0036] The coal injection work of the coal injection gun is controlled by a control center of the coal injection system. The coal injection system is a prior art and will not be described in detail again.

[0037] The solenoid valve, pressure sensor 702 and sound and light alarm 8 are all connected to the coal injection system signal. When force data is generated on the pressure sensor 702, it can be fed back to the control center of the coal injection system. On the one hand, the solenoid valve and the gas supply equipment connected to the hose are controlled to be closed to stop the gas supply. On the other hand, the sound and light alarm 8 is controlled to sound an alarm, which is convenient for the staff to take corresponding measures in time, effectively avoid gas leakage, and thus greatly reduce safety hazards.

[0038] The second implementation method:

[0039] The specific configuration of the sensing ring 7 in this embodiment is different from that in the first embodiment, and the rest of the contents are consistent with those in the first embodiment, wherein the specific differences are as follows:

[0040] Fig. 9 As shown, the left and right inner walls of the empty slot 701 are respectively located on the left and right sides of the spacer ring 72, the pressure contact rod 73 movably penetrates the spacer ring 72 and extends to the other side of the spacer ring 72, the pressure contact rod 73 includes a large diameter section and a small diameter section located in the empty slot 701, the connection between the large diameter section and the small diameter section is located in the empty slot 701, the small diameter section penetrates the spacer ring 72, and an annular conductive sheet is inlaid on the end surface of the large diameter section, and the annular conductive sheet is located on the outside of the small diameter section, as shown in FIG. Fig.11 The left and right end surfaces of the spacer ring 72 are both attached with fixed conductive sheets 721, the fixed conductive sheets 721 correspond to the annular conductive sheets, and the two annular conductive sheets are electrically connected, wherein the two annular conductive sheets are both connected in series to the control circuit of the sound and light alarm 8.

[0041] When the hose 5 is loosened, the sensing ring 7 is subjected to a greater squeezing force, causing the pressure-touch rod 73 to move toward the display groove 74. On the one hand, the display groove 74 is more obviously convex, which can remind the staff. On the other hand, when the large-diameter sections of the two pressure-touch rods 73 are in contact with the spacing ring 72, the two sets of fixed conductive sheets 721 and the annular conductive gaskets are in contact, so that the control circuit of the sound and light alarm 8 is turned on, causing the sound and light alarm 8 to sound and light alarm, thereby realizing that when the hose 5 is loose but not yet fallen off, the staff can be reminded of the abnormality, effectively avoiding the occurrence of a large amount of gas leakage due to the falling off of the hose 5, and effectively reducing the safety hazard of fire or explosion.

[0042] The distance between the end of the small diameter section and the display concave strip 74 is smaller than the distance between the end of the large diameter section and the surface of the spacer ring 72, which effectively ensures that during installation, Fig.10 When the end of the small diameter section of the pressure contact rod 73 squeezes the display concave strip 74, the end of the large diameter section of the pressure contact rod 73 has not yet contacted the spacing ring 72, which effectively ensures that the circuit of the sound and light alarm 8 will not be turned on in advance.

[0043] It is worth noting that only the outwardly facing concave surface of the display groove 74 and the end surface facing the pressure contact rod 73 are elastic structures, and the rest of the structure is hard. When the pressure contact rod 73 contacts the display groove 74 during installation, its outer end surface can be transformed from concave to convex.

[0044] In this embodiment, the pressure sensor 702 of the first embodiment can be replaced by structures such as a fixed conductive sheet 721 and an annular conductive gasket, and in this embodiment, the sound and light alarm 8 can be directly turned on to alarm without going through the coal injection system. At the same time, the sound and light alarm 8 can synchronously feed back the signal to the control center of the coal injection system after the alarm, thereby controlling the solenoid valve and the gas supply equipment connected to the hose to close, stop the gas supply, and reduce safety hazards.

[0045] The third implementation method:

[0046] On the basis of the first embodiment, the display concave strips 74 in the second embodiment are added, and the rest of the contents are consistent with the first embodiment.

[0047] In this embodiment, after the hose 5 is installed on the air supply pipe 4, when the tube ring 61 and the detachable ring 62 are tightened by the screw 63, the surface of the display groove 74 can be changed from concave to convex without triggering the pressure sensor 702. When the sound and light alarm 8 does not alarm and the display groove 74 returns to the concave, it means that the nut on the screw 63 is loose. When the display groove 74 remains convex, when the sound and light alarm 8 alarms, it means that the sensing ring 7 has been subjected to a greater extrusion force than expected, indicating that the hose 5 is likely to fall off.

[0048] In summary, in the above-mentioned blast furnace coal injection gun with an anti-falling structure, through the provision of the anti-falling component 6, on the one hand, the connection between the hose 5 and the gas supply pipe 4 can be strengthened, so that the stability of the connection is higher and the possibility of the hose 5 falling off is reduced. On the other hand, when the hose 5 is loose but not detached, the extent of its loosening can cause the sensing ring 7 to be squeezed, thereby triggering the sound and light alarm 8 to alarm. Compared with the prior art, when the hose 5 has not fallen off but is only loose, an abnormality warning can be issued, which can effectively ensure that the staff can take corresponding measures to deal with the abnormal situation in time, and can also greatly reduce the gas leakage, or make the abnormality have been dealt with when the gas has not leaked, thereby greatly reducing safety hazards and being less likely to cause fire or explosion.

[0049] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A blast furnace coal injection gun with an anti-falling structure, characterized in that: The invention comprises a coal spray gun body (1), the lower end of the coal spray gun body (1) is fixedly connected to a gun barrel (2), the lower end of the gun barrel (2) is equipped with a nozzle (3), the upper end of the coal spray gun body (1) is fixedly connected to two air supply pipes (4), the air supply pipes (4) are connected to a solenoid valve, the end of the air supply pipe (4) is threadedly connected to a hose (5), an anti-slip assembly (6) is connected between the hose (5) and the air supply pipe (4), and the anti-slip assembly (6) comprises a pipe-following ring (61) fixedly connected to the end of the hose (5), a limit ring (62) fixedly connected to the outer end of the air supply pipe (4), and a stop ring (63) fixedly connected to the outer end of the air supply pipe (4). 64) and a follow-and-detach ring (62) sleeved on the outside of the air supply pipe (4), the follow-and-detach ring (62) being located between the limit ring (64) and the solenoid valve, the follow-and-detach ring (61) and the follow-and-detach ring (62) being fastened and connected by two upper and lower corresponding screws (63), and the screws (63) passing through the limit ring (64), the air supply pipe (4) is also sleeved with a sensing ring (7), the sensing ring (7) being located between the follow-and-detach ring (62) and the limit ring (64), and the sensing ring (7) is in conflict with the two, and an audible and visual alarm (8) is also installed on the outside of the air supply pipe (4); The sensing ring (7) comprises an elastic section (71) and a spacer ring (72) fixedly embedded in the middle of the elastic section (71); both left and right ends of the elastic section (71) are provided with empty grooves (701); the two empty grooves (701) are symmetrical about the center point of the elastic section (71); two pressure-touch rods (73) corresponding to the two empty grooves (701) are fixedly embedded in the elastic section (71); a pressure sensor (702) is provided in the empty groove (701); and the pressure sensor (702) is mounted on the spacer ring (72).

2. The blast furnace coal injection gun with an anti-falling structure according to claim 1, characterized in that: The outer diameter of the sensing ring (7) is smaller than the distance between the ends of the two screw rods (63) that are close to each other.

3. The blast furnace coal injection gun with an anti-falling structure according to claim 1, characterized in that: The end of the pressure-touch rod (73) extends into the empty slot (701), and the end of the pressure-touch rod (73) faces the pressure sensor (702), with a gap between the two.

4. The blast furnace coal injection gun with an anti-falling structure according to claim 1, characterized in that: The left and right inner walls of the empty groove (701) are respectively located on the left and right sides of the spacing ring (72), and the pressure contact rod (73) movably penetrates the spacing ring (72) and extends to the other side of the spacing ring (72).

5. The blast furnace coal injection gun with an anti-falling structure according to claim 4, characterized in that: The pressure-touch rod (73) comprises a large-diameter section and a small-diameter section located in the empty slot (701); the connection between the large-diameter section and the small-diameter section is located in the empty slot (701); and the small-diameter section passes through the spacer ring (72).

6. The blast furnace coal injection gun with an anti-falling structure according to claim 5, characterized in that: The distance between the end of the small diameter section and the display concave strip (74) is smaller than the distance between the end of the large diameter section and the surface of the spacing ring (72).

7. The blast furnace coal injection gun with an anti-falling structure according to claim 6, characterized in that: An annular conductive sheet is inlaid on the end surface of the large diameter section, the annular conductive sheet is located outside the small diameter section, and fixed conductive sheets (721) are attached to the left and right end surfaces of the spacing ring (72), the fixed conductive sheet (721) corresponds to the annular conductive sheet, and the two annular conductive sheets are electrically connected.

8. The blast furnace coal injection gun with an anti-falling structure according to claim 7, characterized in that: The two annular conductive sheets are connected in series to the control circuit of the sound and light alarm (8). When the two annular conductive sheets are in contact with the two fixed conductive sheets (721) respectively, the control circuit of the sound and light alarm (8) is turned on, so that the sound and light alarm (8) issues an early warning of the loosening of the hose (5).

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