Single-waterway long-life plasma torch for welding electrode block

Abstract

The invention belongs to the technical field of titanium alloy smelting and welding, and discloses a single-waterway long-life plasma torch for welding an electrode block, which comprises a nozzle, an anode, a gas ring, an inner-layer water-cooling sleeve group, a middle-layer water-cooling sleeve group, an external water-cooling sleeve group, a water-cooling flange group, a water inlet, a water outlet and an air inlet hole, the unique water inlet is positioned at the tail part of the inner-layer water-cooling sleeve group, and cooling water flows into the middle-layer water-cooling sleeve group through the gap and the cooling water passage after cooling the anode; the gas ring and the plug are located in the middle layer water-cooling sleeve set, cooling water cools the gas ring and then flows into the external water-cooling sleeve set through the insulating water-cooling outer flange, and cooling water of the external water-cooling sleeve set cools the nozzle and the ceramic ring and then flows out of the plasma torch. The overall cooling efficiency is high, the electric leakage risk does not exist, and the service life of the nozzle can be effectively prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of titanium alloy melting and welding, and particularly relates to a single-water-path long-service-life plasma torch for a welding electrode block. BACKGROUND

[0002] The plasma welding box (plasma arc welding equipment) is a high-precision welding equipment using a plasma arc as a heat source. The existing plasma welding box has the following problems: the service life of the nozzle is short, and the plasma torch nozzle needs to be frequently replaced; the plasma torch used on the welding box is a transferred plasma torch, the electrode block is electrified, and the rack and the box body need to be well insulated. If the insulation fails, there is a risk of electric leakage; the plasma torch has multiple water inlets and outlets, and the cooling efficiency is low. SUMMARY

[0003] The purpose of the present application is to provide a single-water-path long-service-life plasma torch for a welding electrode block. The only water inlet is located at the tail of the inner water-cooled sleeve group, and the cooling water cools the anode, then flows into the middle layer water-cooled sleeve group through the gap and the cooling water passage. The gas ring and the plug are located at the front end of the middle layer water-cooled sleeve group, and the cooling water cools the gas ring, then flows into the external water-cooled sleeve group through the insulated water-cooled outer flange. The cooling water that enters the external water-cooled sleeve group cools the nozzle and the ceramic ring, and then flows out of the plasma torch. Overall, the cooling efficiency is high, there is no risk of electric leakage, and the service life of the nozzle can be effectively prolonged.

[0004] The technical solution adopted by the present application is a single-water-path long-service-life plasma torch for a welding electrode block, which comprises a nozzle, an anode, a gas ring, an inner water-cooled sleeve group, a middle layer water-cooled sleeve group, an external water-cooled sleeve group, a water-cooled flange group, a water inlet, a water outlet, and an air inlet hole.

[0005] The inner water-cooled sleeve group comprises one layer of inner water-cooled sleeve and two layers of inner water-cooled sleeve. The one layer of inner water-cooled sleeve is inserted and assembled at the tail of the two layers of inner water-cooled sleeve. The front end of the two layers of inner water-cooled sleeve is connected with the anode through threads. The water inlet is arranged at the tail end of the two layers of inner water-cooled sleeve.

[0006] The water-cooled flange group comprises a water-cooled outer flange, a water-cooled inner flange, an insulated water-cooled inner flange, and an insulated water-cooled outer flange. The water-cooled outer flange is fixedly assembled at the tail of the two layers of inner water-cooled sleeve. The insulated water-cooled inner flange is fixedly connected at the front end of the water-cooled outer flange. The water-cooled inner flange is fixedly connected at the front end of the insulated water-cooled inner flange. The insulated water-cooled outer flange is fixedly connected at the front end of the water-cooled inner flange. The air inlet hole is arranged on the water-cooled outer flange.

[0007] The intermediate layer water cooling sleeve set comprises a first intermediate water cooling sleeve, a second intermediate water cooling sleeve and a third intermediate water cooling sleeve, the first intermediate water cooling sleeve is sleeved outside the second intermediate water cooling sleeve, the second intermediate water cooling sleeve is sleeved outside the first intermediate water cooling sleeve, and the third intermediate water cooling sleeve is sleeved outside the second intermediate water cooling sleeve, the gas ring is arranged at the front end of the anode, the front ends of the first intermediate water cooling sleeve, the second intermediate water cooling sleeve and the third intermediate water cooling sleeve are in sealed connection with the gas ring, and the tail ends of the first intermediate water cooling sleeve, the second intermediate water cooling sleeve and the third intermediate water cooling sleeve are in sealed connection with the water cooling inner flange.

[0008] The outer water cooling sleeve set comprises a first outer water cooling sleeve, a second outer water cooling sleeve and a third outer water cooling sleeve, the first outer water cooling sleeve is sleeved outside the third intermediate water cooling sleeve, the second outer water cooling sleeve is sleeved outside the first outer water cooling sleeve, and the third outer water cooling sleeve is sleeved outside the second outer water cooling sleeve, the nozzle is arranged at the front end of the gas ring, the front ends of the first outer water cooling sleeve, the second outer water cooling sleeve and the third outer water cooling sleeve are in sealed connection with the nozzle, the tail end of the third outer water cooling sleeve is in sealed connection with the insulating water cooling outer flange, the tail ends of the first outer water cooling sleeve and the second outer water cooling sleeve are in sealed connection with the third outer water cooling sleeve, and the water outlet is arranged on the third outer water cooling sleeve.

[0009] The water cooling outer flange, the water cooling inner flange, the insulating water cooling inner flange and the insulating water cooling outer flange are provided with cooling water channels, gaps are arranged between the first inner water cooling sleeve and the second inner water cooling sleeve, gaps are arranged between adjacent two of the first intermediate water cooling sleeve, the second intermediate water cooling sleeve and the third intermediate water cooling sleeve, gaps are arranged between adjacent two of the first outer water cooling sleeve, the second outer water cooling sleeve and the third outer water cooling sleeve, and the cooling water channels are in communication with the gaps.

[0010] Further, the nozzle is externally sleeved with a hexagonal nut.

[0011] Further, gaps exist at the front ends of the first inner water cooling sleeve and the second inner water cooling sleeve, and the tail ends of the first inner water cooling sleeve and the second inner water cooling sleeve are in sealed connection.

[0012] Further, a plug is arranged between the second inner water cooling sleeve and the first intermediate water cooling sleeve.

[0013] Further, a ceramic ring is embedded between the front ends of the third intermediate water cooling sleeve and the first outer water cooling sleeve.

[0014] The beneficial effects of the present application are as follows:

[0015] The only water inlet of the application is located at the tail of the inner layer water-cooled sleeve group, and the cooling water flows into the middle layer water-cooled sleeve group through the gap and the cooling water passage after cooling the anode; the gas ring and the plug are located at the front end of the middle layer water-cooled sleeve group, and the cooling water flows into the external water-cooled sleeve group through the insulating water-cooled outer flange after cooling the gas ring, and the cooling water in the external water-cooled sleeve group cools the nozzle and the ceramic ring and then flows out of the plasma torch, so that the overall cooling efficiency is high, there is no risk of electric leakage, and the service life of the nozzle can be effectively prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the overall mechanism of the application;

[0017] Figure 2 It is a partial sectional view of the application;

[0018] In the figure: 1, hexagonal nut; 2, nozzle; 3, water inlet; 4, water outlet; 5, ceramic ring; 6, gas ring; 7, anode; 8, air inlet hole; 9, plug; 10, external water-cooled sleeve group; 11, middle layer water-cooled sleeve group; 12, water-cooled inner flange; 13, insulating water-cooled outer flange; 14, inner layer water-cooled sleeve group; 15, water-cooled outer flange; 16, insulating water-cooled inner flange; 141, one layer of inner water-cooled sleeve; 142, two layers of inner water-cooled sleeve; 111, one layer of middle water-cooled sleeve; 112, two layers of middle water-cooled sleeve; 113, three layers of middle water-cooled sleeve; 101, one layer of external water-cooled sleeve; 102, two layers of external water-cooled sleeve; 103, three layers of external water-cooled sleeve; 121, cooling water passage. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the application more clear and explicit, the technical scheme of the application will be further described in detail below with reference to the drawings.

[0020] As shown in Figure 1 , Figure 2 , a single water path long-life welding electrode block plasma torch, comprising a nozzle 2, an anode 7, a gas ring 6, an inner layer water-cooled sleeve group 14, a middle layer water-cooled sleeve group 11, an external water-cooled sleeve group 10, a water-cooled flange group, a water inlet 3, a water outlet 4 and an air inlet hole 8.

[0021] The inner layer water-cooled sleeve group 14 comprises one layer of inner water-cooled sleeve 141 and two layers of inner water-cooled sleeve 142, and the one layer of inner water-cooled sleeve 141 is inserted and assembled in the two layers of inner water-cooled sleeve 142 from the tail, the front end of the two layers of inner water-cooled sleeve 142 is connected with the anode 7 through threads, and the water inlet 3 is arranged at the tail end of the two layers of inner water-cooled sleeve 142.

[0022] The water-cooled flange group comprises a water-cooled outer flange 15, a water-cooled inner flange 12, an insulating water-cooled inner flange 16 and an insulating water-cooled outer flange 13, the water-cooled outer flange 15 is fixedly sleeved at the tail of the second inner water-cooled sleeve pipe 142, the insulating water-cooled inner flange 16 is fixedly connected at the front end of the water-cooled outer flange 15, the water-cooled inner flange 12 is fixedly connected at the front end of the insulating water-cooled inner flange 16, the insulating water-cooled outer flange 13 is fixedly connected at the front end of the water-cooled inner flange 12, and the air inlet hole 8 is arranged on the water-cooled outer flange 15.

[0023] The intermediate layer water-cooled sleeve pipe group 11 comprises a first intermediate water-cooled sleeve pipe 111, a second intermediate water-cooled sleeve pipe 112 and a third intermediate water-cooled sleeve pipe 113, the first intermediate water-cooled sleeve pipe 111 is sleeved outside the second inner water-cooled sleeve pipe 142, the second intermediate water-cooled sleeve pipe 112 is sleeved outside the first intermediate water-cooled sleeve pipe 111, and the third intermediate water-cooled sleeve pipe 113 is sleeved outside the second intermediate water-cooled sleeve pipe 112, the air ring 6 is arranged at the front end of the anode 7, the front ends of the first intermediate water-cooled sleeve pipe 111, the second intermediate water-cooled sleeve pipe 112 and the third intermediate water-cooled sleeve pipe 113 are sealingly connected with the air ring 6, and the tail ends of the first intermediate water-cooled sleeve pipe 111, the second intermediate water-cooled sleeve pipe 112 and the third intermediate water-cooled sleeve pipe 113 are sealingly connected with the water-cooled inner flange 12.

[0024] The outer water-cooled sleeve pipe group 10 comprises a first outer water-cooled sleeve pipe 101, a second outer water-cooled sleeve pipe 102 and a third outer water-cooled sleeve pipe 103, the first outer water-cooled sleeve pipe 101 is sleeved outside the third intermediate water-cooled sleeve pipe 113, the second outer water-cooled sleeve pipe 102 is sleeved outside the first outer water-cooled sleeve pipe 101, and the third outer water-cooled sleeve pipe 103 is sleeved outside the second outer water-cooled sleeve pipe 102, the nozzle 2 is arranged at the front end of the air ring 6, the front ends of the first outer water-cooled sleeve pipe 101, the second outer water-cooled sleeve pipe 102 and the third outer water-cooled sleeve pipe 103 are sealingly connected with the nozzle 2, the tail end of the third outer water-cooled sleeve pipe 103 is sealingly connected with the insulating water-cooled outer flange 13, the tail ends of the first outer water-cooled sleeve pipe 101 and the second outer water-cooled sleeve pipe 102 are sealingly connected with the third outer water-cooled sleeve pipe 103, and the water outlet 4 is arranged on the third outer water-cooled sleeve pipe 103.

[0025] Cooling water passages 121 are arranged in the water-cooled outer flange 15, the water-cooled inner flange 12, the insulating water-cooled inner flange 16 and the insulating water-cooled outer flange 13, gaps are arranged between the first inner water-cooled sleeve pipe 141 and the second inner water-cooled sleeve pipe 142, gaps are arranged between adjacent two of the first intermediate water-cooled sleeve pipe 111, the second intermediate water-cooled sleeve pipe 112 and the third intermediate water-cooled sleeve pipe 113, gaps are arranged between adjacent two of the first outer water-cooled sleeve pipe 101, the second outer water-cooled sleeve pipe 102 and the third outer water-cooled sleeve pipe 103, and the cooling water passages 121 are in communication with the gaps.

[0026] The nozzle 2 is externally sleeved with a hexagonal nut 1. The front end of the one-layer inner water cooling jacket 141 and the two-layer inner water cooling jacket 142 has a gap, and the tail end of the one-layer inner water cooling jacket 141 and the two-layer inner water cooling jacket 142 is sealingly connected.

[0027] The two-layer inner water cooling jacket 142 is provided with a plug 9 between the one-layer intermediate water cooling jacket 111. The front end of the three-layer intermediate water cooling jacket 113 and the one-layer outer water cooling jacket 101 is embedded with a ceramic ring 5.

[0028] The only water inlet 3 of the plasma torch is located at the tail of the two-layer inner water cooling jacket 142, the front end of the two-layer inner water cooling jacket 142 is connected with the anode 7 through threads, and the anode 7 is sealingly connected with the two-layer inner water cooling jacket 142 through an O-shaped sealing ring, the tail of the two-layer inner water cooling jacket 142 is sealingly connected with the water cooling outer flange 15 through an O-shaped sealing ring, and the water in the inner layer water cooling jacket group 14 is guided into the intermediate layer water cooling jacket group 11 through the insulated water cooling inner flange 16 and the water cooling inner flange 12; the water cooling outer flange 15, the water cooling inner flange 12, the insulated water cooling inner flange 16 and the insulated water cooling outer flange 13 are provided with cooling water passages 121, which are sealingly connected through O-shaped sealing rings.

[0029] After the cooling water cools the anode 7, it flows into the intermediate layer water cooling jacket group 11 through the cooling water passages 121; the gas ring 6 and the plug 9 are located at the front end of the intermediate layer water cooling jacket group 11, and the cooling water cools the gas ring 6 and then flows into the outer water cooling jacket group 10 through the insulated water cooling outer flange 13; the cooling water entering the outer water cooling jacket group 10 cools the nozzle 1 and the ceramic ring 5 and then flows out of the plasma torch.

[0030] The plug 9 is located between the two-layer inner water cooling jacket 142 and the one-layer intermediate water cooling jacket 111, and is used for insulation and positioning, and the plug 9 is provided with a gas hole; the only gas inlet hole 8 of the plasma torch is located on the water cooling outer flange 15; the gas entering the plasma torch from the gas inlet hole 8 uniformly enters the gas ring 6 through the gas hole on the plug 9; the gas ring 6 is located between the nozzle 2 and the anode 7, and the gas ring 6 has uniformly distributed gas holes in the circumferential direction, which are used for providing stable high-speed gas flow; the gas flowing between the gas ring 6 and the anode 7 is ionized into high-temperature plasma and then flows to the nozzle 2.

[0031] The cooling water guided into the intermediate layer water cooling jacket group 11 cools the gas ring 6 and then returns to the tail, flows into the outer water cooling jacket group 10 through the insulated water cooling outer flange 13; the nozzle 2 and the hexagonal nut 1 are located at the front end of the whole device, and the nozzle 2 is sealingly connected with the outer water cooling jacket group 10 through an O-shaped sealing ring; the ceramic ring 5 is located between the three-layer intermediate water cooling jacket 113 and the one-layer outer water cooling jacket 101, and plays a role of positioning support and insulation; the high-temperature plasma flowing out of the gas ring 6 is sprayed out of the plasma torch through the nozzle 2; the cooling water cools the ceramic ring 5 and the nozzle 2 and then flows out of the plasma torch through the only water outlet 4 located on the three-layer outer water cooling jacket 103.

[0032] That which is not described in detail in the specification is considered to be known by those skilled in the art.

Claims

1. A plasma torch for a single waterway long-life welding electrode block, characterized by, The nozzle, the anode, the gas ring, the inner layer water-cooled sleeve group, the intermediate layer water-cooled sleeve group, the external water-cooled sleeve group, the water-cooled flange group, the water inlet, the water outlet and the air inlet hole are included. The inner layer water-cooled sleeve group includes one layer of inner water-cooled sleeve and two layers of inner water-cooled sleeve, the one layer of inner water-cooled sleeve is inserted into the two layers of inner water-cooled sleeve from the tail end, the front end of the two layers of inner water-cooled sleeve is connected with the anode through screw thread, and the water inlet is arranged at the tail end of the two layers of inner water-cooled sleeve. The water-cooled flange group includes water-cooled outer flange, water-cooled inner flange, insulating water-cooled inner flange and insulating water-cooled outer flange, the water-cooled outer flange is fixedly sleeved at the tail end of the two layers of inner water-cooled sleeve, the insulating water-cooled inner flange is fixedly connected at the front end of the water-cooled outer flange, the water-cooled inner flange is fixedly connected at the front end of the insulating water-cooled inner flange, the insulating water-cooled outer flange is fixedly connected at the front end of the water-cooled inner flange, and the air inlet hole is arranged on the water-cooled outer flange. The intermediate layer water-cooled sleeve group includes one layer of intermediate water-cooled sleeve, two layers of intermediate water-cooled sleeve and three layers of intermediate water-cooled sleeve, the one layer of intermediate water-cooled sleeve is sleeved outside the two layers of water-cooled sleeve, the two layers of intermediate water-cooled sleeve are sleeved outside the one layer of intermediate water-cooled sleeve, the three layers of intermediate water-cooled sleeve are sleeved outside the two layers of intermediate water-cooled sleeve, the gas ring is arranged at the front end of the anode, the front ends of the one layer of intermediate water-cooled sleeve, the two layers of intermediate water-cooled sleeve and the three layers of intermediate water-cooled sleeve are sealingly connected with the gas ring, and the tail ends of the one layer of intermediate water-cooled sleeve, the two layers of intermediate water-cooled sleeve and the three layers of intermediate water-cooled sleeve are sealingly connected with the water-cooled inner flange. The external water-cooled sleeve group includes one layer of external water-cooled sleeve, two layers of external water-cooled sleeve and three layers of external water-cooled sleeve, the one layer of external water-cooled sleeve is sleeved outside the three layers of intermediate water-cooled sleeve, the two layers of external water-cooled sleeve are sleeved outside the one layer of external water-cooled sleeve, the three layers of external water-cooled sleeve are sleeved outside the two layers of external water-cooled sleeve, the nozzle is arranged at the front end of the gas ring, the front ends of the one layer of external water-cooled sleeve, the two layers of external water-cooled sleeve and the three layers of external water-cooled sleeve are sealingly connected with the nozzle, the tail end of the three layers of external water-cooled sleeve is sealingly connected with the insulating water-cooled outer flange, the tail ends of the one layer of external water-cooled sleeve and the two layers of external water-cooled sleeve are sealingly connected with the three layers of external water-cooled sleeve, and the water outlet is arranged on the three layers of external water-cooled sleeve. Cooling water passages are arranged in the water-cooled outer flange, the water-cooled inner flange, the insulating water-cooled inner flange and the insulating water-cooled outer flange, gaps are arranged between the one layer of inner water-cooled sleeve and the two layers of inner water-cooled sleeve, gaps are arranged between adjacent two of the one layer of intermediate water-cooled sleeve, the two layers of intermediate water-cooled sleeve and the three layers of intermediate water-cooled sleeve, and gaps are arranged between adjacent two of the one layer of external water-cooled sleeve, the two layers of external water-cooled sleeve and the three layers of external water-cooled sleeve, and the cooling water passages are in communication with the gaps.

2. The single waterway long-life welding electrode block plasma torch of claim 1, wherein, The nozzle is externally sleeved with a hexagonal nut.

3. The single waterway long-life welding electrode block plasma torch of claim 1, wherein, Gaps exist at the front ends of the one layer of inner water-cooled sleeve and the two layers of inner water-cooled sleeve, and the tail ends of the one layer of inner water-cooled sleeve and the two layers of inner water-cooled sleeve are sealingly connected.

4. The single waterway long-life welding electrode block plasma torch of claim 1, wherein, A plug is arranged between the two layers of inner water-cooled sleeve and the one layer of intermediate water-cooled sleeve.

5. The single waterway long-life welding electrode block plasma torch of claim 1, wherein, The front end of the three-layer intermediate water-cooled jacket and the one-layer outer water-cooled jacket is embedded with a ceramic ring.

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