TWI493121B - Switching means are hot - Google Patents

Description

Homothermal heat exchange device

The present invention relates to a heat exchange device, and more particularly to a soaking heat exchange device.

The shaft sealing device is applied to the shaft sealing chamber of the rotating mechanical device and is installed at the gap between the wall surface of the device and the rotating mandrel to prevent the fluid or gas pressure in the reaction tank from oozing out from the pivoting portion. In particular, when the process fluid delivered by the rotating machinery is volatile (VOC), or is toxic or corrosive or requires high temperature cooling, a double shaft sealing device is required.

Referring to Figure 1, the new patented clip-on shaft seal device 1 of the Republic of China Bulletin No. 459938 "Clamp-type shaft seal device for rotating machinery" is disposed on a mechanical device 100 and is spindled by the mechanical device 100. The shaft sealing device 1 is provided with a sleeve 11 which is placed by the spindle 101 on the mechanical device 100, is disposed on the mechanical device 100 and is placed by the sleeve 11 and is formed into a first-class An outer cover 12 of the inlet 121 and the first-class outlet 122, an accommodating space 13 formed between the outer cover 12 and the sleeve 11 and communicating with the flow inlet 121 and the outlet 122 are disposed on the sleeve 11 The upper inner sealing mechanism 14 and an outer sealing mechanism 15 located in the accommodating space 13.

The insulating liquid 102 flows into the accommodating space 13 from the inflow port 121, and then flows out from the venting port 122, thereby not only blocking possible volatile substances in the mechanical device 100, but also reducing the inner sealing mechanism 14 and the outer sealing. The frictional heat generated between the components of the mechanism 15.

In order to dilute and block the extravasation of the fluid on the process side to the atmosphere side, the heat exchanger 16 as shown in FIG. 2 is externally connected, and the heat exchanger 16 includes a casing 161 disposed on the casing 161. A heat exchange inlet 162 and a heat exchange outlet 163, and a condensation pipe 164 disposed in the casing 161 and spirally flowing with a cooling liquid (generally cooling water).

The grooved conveying ring 151 can be rotated with the mandrel 101 by the outer sealing mechanism 15, thereby driving the insulating liquid 102 to generate a circulating flow in the shaft sealing device 1 and the heat exchanger 16 for heat exchange purposes.

Referring to FIGS. 1 and 2, the insulating liquid 102 which is heated to reduce the frictional heat of the inner sealing mechanism 14 and the outer sealing mechanism 15 flows into the casing 161 from the outlet 122 and the heat exchange inlet 162, and the condenser 164 is utilized. The cooling liquid in the middle of the heat exchange with the insulating liquid 102 causes the insulating liquid 102 to cool down and then cools, and then the heat exchange outlet 163 and the inlet port 121 flow into the accommodating space 13 to sufficiently circulate the insulating liquid 102.

Although the heat exchanger 16 can achieve the function of heat exchange, the insulating liquid 102 flows into the casing 161 laterally via the heat exchange inlet 162, and then mixes with the insulating liquid 102 in the casing 161, resulting in a partial insulation liquid. 102 is not sufficiently uniformly exchanged heat with the cooling liquid in the condenser pipe 164 such that the temperature at the heat exchange inlet 162 is higher, causing the temperature of the region A in the casing 161 to be greater than the temperature of the region B, and the temperature of the region B is greater than the region. The temperature of C, and the temperature of the region C is greater than the temperature of the region D, so that the temperature of the insulating liquid 102 partially flowing out of the heat exchange outlet 163 is not sufficiently cooled, so that the temperature at the heat exchange outlet 163 and the internal temperature of the casing 161 The heat is not soaked, resulting in insufficient heat exchange capacity of the heat exchanger 16.

Since the heat exchange capacity of the heat exchanger 16 is insufficient, the isolation liquid 102 cannot be sufficiently uniformly cooled, so that the temperature of the casing 161 by the heat exchange inlet 162 and the heat exchange outlet 163 is relatively high, resulting in the components of the shaft sealing device 1. It takes a long time to operate in a high temperature environment, which not only greatly reduces the service life of the shaft sealing device 1, but also is more likely to cause excessive leakage due to aging, deformation or thermal expansion and contraction of the rubber member, which affects the stability of the structure and causes leakage. accident.

Accordingly, it is an object of the present invention to provide a soaking heat exchange apparatus which can improve heat exchange efficiency.

Therefore, the heat exchange device of the present invention is used for a shaft seal comprising a hollow storage tank, a cooling unit disposed in the storage tank, and a circulation unit.

The storage tank includes a storage space in which the circulating liquid is stored. The cooling unit includes a cooling coil housed in the storage space of the storage tank and circulating a cooling fluid, and is disposed on the storage tub and connected to the cooling tray. One end of the tube is a coolant input pipe for inputting a cooling fluid, and a coolant discharge pipe disposed on the storage tub and connected to the other end of the cooling coil to discharge a cooling fluid, the cooling coil encircling and defining an inner region of the ring .

The circulating unit includes a circulating liquid outflow pipe and a circulating liquid inflow pipe which are disposed on the storage tub and communicate with the storage space, wherein the circulating fluid inflow pipe has a connecting section outside the storage tub, a guiding section extending from the connecting section toward the cooling coil, and a discharge opening formed at an end of the guiding section and facing the cooling coil, and the discharge opening is located in the inner region of the ring.

The circulating liquid flows into the shaft seal through the circulating liquid outflow pipe and absorbs heat, and then flows through the discharge port of the circulating liquid into the pipe, flows toward the cooling coil, and cools in the cooling coil. The fluid undergoes heat exchange to release heat and cool down.

The invention has the beneficial effects that: by using the discharge port facing the inner region of the ring, the circulating liquid which guides the heat absorption and temperature rise can flow toward the center of the cooling coil through the circulating liquid inflow pipe, thereby ensuring that the circulating liquid which absorbs heat and heats up can be quickly and Uniform heat exchange with the cooling fluid in the cooling coil to release heat and cool, to ensure that the circulating circulating liquid is evenly contacted with the cooling fluid, and greatly expand the connection between the circulating fluid outflow pipe and the circulating fluid inflow pipe The temperature difference between the segments to improve heat exchange efficiency.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 3, a first preferred embodiment of the soaking heat exchange device 2 of the present invention comprises a hollow storage tank 21, a cooling unit 22 disposed in the storage tank 21, a circulation unit 23, and a liquid level detection. Unit 24, and a pressure control unit 25.

The storage tank 21 includes a barrel body 211 formed with two opposite openings 212, a lower cover 213 and an upper cover 214 respectively closing the opening 212, and a barrel 211 and a lower cover 213 are matched with the upper cover 214. a storage space 215 storing the circulating liquid 200, a liquid window 216 formed on the barrel 211 for observing the liquid level of the circulating liquid 200 in the storage space 215, being connected to the upper cover 214 and communicating with the storage The space 215 is input to the injection port 217 of the circulating liquid 200, and a discharge port 218 connected to the lower cover 213 and communicating with the storage space 215 to discharge the circulating liquid 200.

Referring to FIG. 3 and FIG. 4, the cooling unit 22 includes a cooling coil 221 disposed in the storage space 215 of the storage tub 21 and circulating a cooling fluid, and is disposed on the lower cover 213 of the storage tub 21 and connected thereto. A coolant inlet pipe 222 at one end of the cooling coil 221, and a coolant discharge pipe 223 disposed on the lower cover 213 of the storage tub 21 and connected to the other end of the cooling coil 221. The cooling coil 221 extends from the lower cover 213 toward the upper cover 214 and defines an inner ring region 224. The cooling fluid is indicated by an arrow 31 in FIG. 3, and the cooling is input by the coolant input pipe 222. The coil 221 is discharged from the coolant discharge pipe 223 as indicated by an arrow 32 in Fig. 3 .

The circulation unit 23 includes a circulating liquid outflow pipe 231 and a circulating fluid inflow pipe 232 which are disposed on the barrel 211 of the storage tub 21 and communicate with the storage space 215. The circulating fluid inflow pipe 232 The 232 has a connecting portion 233 outside the storage tub 21, a guiding portion 234 extending from the connecting portion 233 toward the cooling coil 221, and a guiding portion 234 formed opposite to the connecting portion 233. a discharge port 235 on one side facing the cooling coil 221, and the distance between the circulating fluid outflow pipe 231 and the lower cover 213 is smaller than the distance between the guiding section 234 of the circulating fluid inflow pipe 232 and the lower cover 213 And the vent 235 is located within the inner region 224 of the ring.

Referring to FIG. 3 , the liquid level detecting unit 24 includes a first sensing hole 241 connected to the barrel 211 and communicating with the storage space 215 , and is spaced apart from the first sensing hole 241 in the barrel. a second sensing hole 242 on the body 211 and communicating with the storage space 215, a first liquid level switch 243 disposed in the first sensing hole 241 to sense the liquid level of the circulating liquid 200, and a first set in the first A second level switch 244 is sensed in the second sensing aperture 242 to sense the level of the circulating liquid 200.

The pressure control unit 25 includes a connection port 251 connected to the upper cover 214 and communicating with the storage space 215, a connection line 252 connected to the connection port 251, and an arrangement arranged on the connection line 252. A gas valve 253, and a pressure gauge 254 disposed on the connecting line 252.

Referring to FIGS. 3 and 5, the circulating liquid 200 accommodated in the storage space 215 is flown through a shaft seal 4 through the circulating fluid outflow pipe 231 as indicated by an arrow 33 in FIG. 5 to absorb the shaft seal 4 when it is actuated. The friction heat or the heat of the fluid inside the shaft seal 4 (process liquid) can also block the leakage of possible volatile substances inside the shaft seal 4, and the high temperature circulating liquid 200 which absorbs the friction heat and heats up can be as shown in the figure. As indicated by the arrow 34 in the middle, the guiding portion 233 and the guiding portion 234 guide the discharge port 235 facing the inner ring region 224 to directly flow toward the inner ring region 224 of the cooling coil 221, thereby enabling Quickly and uniformly exchange heat with the cooling fluid flowing through the cooling coil 221 to release heat and cool, and ensure that the circulating liquid 200 flowing into the barrel 211 can be in contact with the condenser tube 221, thereby improving heat exchange efficiency, thereby The temperature of the region a is equal to the temperature of the region b, and the temperature of the region c is equal to the temperature of the region d, and the temperatures of the regions c, d are substantially smaller than the temperatures of the regions a, b.

When the liquid level of the circulating liquid 200 is lower than the first liquid level switch 243, the first liquid level switch 243 controls the circulating liquid 200 to be injected into the storage space 215 from the injection port 217, so that the circulating liquid 200 accounts for at least the liquid. Window 216 has a liquid level of about 2/3 to maintain the effect of circulating cooling; and when the seal of the shaft seal 4 fails, the fluid inside the shaft seal 4 will leak into the storage space 215, causing the liquid level of the circulating liquid 200 to rise. When the liquid level of the circulating liquid 200 is higher than the second liquid level switch 244, the second liquid level switch 244 will signal the personnel to come to the maintenance to improve the safety of the site.

In addition, if the fluid inside the shaft seal 4 is non-toxic and corrosive, the storage tank 21 does not need to be pressurized, so the intake and exhaust valve 253 maintains the exhaust; if the fluid inside the shaft seal 4 is toxic and corrosive The storage unit is required to be pressurized, and therefore, the intake and exhaust valve 253 maintains intake air to prevent fluid inside the shaft seal 4 from leaking into the atmosphere.

Referring to FIG. 6, a second preferred embodiment of the soaking heat exchange device 2 of the present invention is substantially similar to the first preferred embodiment, except that the guiding portion 234 is detachably coupled to the first preferred embodiment. Connecting the 90° elbow pipe on the segment 233, and the cold coil 221 has a top edge 225 opposite to the coolant inlet pipe 222 and the coolant discharge pipe 223 facing the upper cover 214, and the circulating fluid The discharge port 235 of the inflow pipe 232 overlaps the top edge 235.

Since the preferred embodiment is similar to the first preferred embodiment, in addition to the same effect as the first preferred embodiment, the guiding segment detachably coupled to the connecting segment 233 is utilized. The design of 234 can make the circulation liquid inflow pipe 232 more simple to manufacture, and the discharge port 235 overlapping with the top edge 235 can ensure the high temperature circulating liquid which absorbs the friction heat as shown by the arrow 34 in FIG. 200 (shown in Figure 5) can be brought into contact with the cold coil 221 at a first time to increase heat exchange efficiency.

In summary, the soaking heat exchange device 2 of the present invention utilizes the connecting portion 233 of the circulating fluid inflow pipe 232, the guiding portion 234, and a guide segment 234 formed on the guiding segment 234 and facing the cooling coil 221. The discharge port 235 in the inner region 224 of the ring, the circulating liquid 200 that guides the endothermic temperature rise can flow in the direction of the cooling coil 221 through the circulating fluid inflow pipe 232, so that the temperature of the region a is equal to the temperature of the region b. The temperature of the region c is equal to the temperature of the region d, so as to greatly widen the temperature difference between the regions c and d and the regions a and b, and ensure that the circulating liquid 200 having the endothermic temperature can be quickly exchanged with the cooling fluid in the cooling coil 221. The exothermic cooling and the heat exchange efficiency are improved, so that the object of the present invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

2. . . Heat exchange device

200. . . Circulating liquid

twenty one. . . Storage bucket

211. . . Barrel

212. . . Opening

213. . . lower lid

214. . . Upper cover

215. . . storage space

216. . . Liquid window

217. . . Note entry

218. . . Discharge

twenty two. . . Cooling unit

221. . . Cooling coil

222. . . Coolant inlet tube

223. . . Coolant drain

224. . . Inner area

225. . . Top edge

twenty three. . . Circulating unit

231. . . Circulating fluid outflow tube

232. . . Circulating fluid inflow tube

233. . . Connection segment

234. . . Guide segment

235. . . exhaustion hole

twenty four. . . Level detection unit

241. . . First sensing hole

242. . . Second sensing hole

243. . . First level switch

244. . . Second level switch

25. . . Pressure control unit

251. . . Connector

252. . . Connection line

253. . . Intake and exhaust valve

254. . . pressure gauge

31~34. . . arrow

4. . . Shaft seal

a~d. . . region

Figure 1 is a cross-sectional view showing the new patent of the Republic of China Announcement No. 459938 "Clip-type shaft sealing device for rotating machinery";

Figure 2 is a side view showing a conventional heat exchanger;

Figure 3 is a partial cross-sectional view showing the first preferred embodiment of the heat exchanger of the shaft seal of the present invention;

Figure 4 is a schematic view showing the position of the discharge port in the first preferred embodiment;

Figure 5 is a partial cross-sectional view showing the application of the first preferred embodiment; and

Figure 6 is a partial cross-sectional view showing a second preferred embodiment of the heat exchanger of the shaft seal of the present invention.

2. . . Heat exchange device

200. . . Circulating liquid

twenty one. . . Storage bucket

211. . . Barrel

212. . . Opening

213. . . lower lid

214. . . Upper cover

215. . . storage space

216. . . Liquid window

217. . . Note entry

218. . . Discharge

twenty two. . . Cooling unit

221. . . Cooling coil

222. . . Coolant inlet tube

223. . . Coolant drain

twenty three. . . Circulating unit

231. . . Circulating fluid outflow tube

232. . . Circulating fluid inflow tube

233. . . Connection segment

234. . . Guide segment

235. . . exhaustion hole

twenty four. . . Level detection unit

241. . . First sensing hole

242. . . Second sensing hole

243. . . First level switch

244. . . Second level switch

25. . . Pressure control unit

251. . . Connector

252. . . Connection line

253. . . Intake and exhaust valve

254. . . pressure gauge

31, 32. . . arrow

Claims (10)

A soaking heat exchange device for a shaft seal, the heat exchange device comprising: a hollow storage tank including a storage space for storing circulating liquid; and a cooling unit including a storage for the storage tank a cooling coil in which a cooling fluid flows in a space, a coolant inlet pipe disposed on the storage tub and connected to one end of the cooling coil to input a cooling fluid, and a cooling tank disposed on the storage tub and connected to the cooling tray The other end of the tube is a cooling liquid discharge pipe for discharging a cooling fluid, the cooling coil surrounds an inner ring region; and a circulation unit includes a circulating liquid which is disposed on the storage tub and communicates with the storage space And a circulating fluid inflow pipe, wherein the circulating fluid inflow pipe has a connecting section outside the storage tub, a guiding section extending from the connecting section toward the cooling coil, and a guiding section formed thereon a discharge port bent at the end of the segment and facing the cooling coil, and the discharge port is located in the inner region of the ring; the circulating liquid flows into the shaft seal through the circulating liquid outflow pipe and absorbs heat , And then through the discharge port flows into the circulating fluid tube toward the direction of the cooling coil flows and heat exchange with the cooling fluid flowing through the cooling coil is cooled with the heat. The soaking heat exchange device according to claim 1, wherein the storage tub includes a tub body formed with two opposite openings, and a lower cover and an upper cover respectively closing the opening, the tub body, The lower cover cooperates with the upper cover to define the storage space. The coolant inlet pipe and the coolant discharge pipe are disposed on the lower cover, and the cooling coil extends from the lower cover toward the upper cover. The soaking heat exchange device according to claim 1, further comprising a liquid level detecting unit, wherein the liquid level detecting unit comprises a first sensing connected to the barrel and communicating with the storage space a first sensing hole connected to the barrel and communicating with the storage space, and a first hole disposed in the first sensing hole to sense a circulating liquid level a liquid level switch, and a second liquid level switch disposed in the second sensing hole to sense the circulating liquid level. The soaking heat exchange device according to claim 2, further comprising a pressure control unit for adjusting the pressure of the storage space, the pressure control unit comprising a connection connected to the upper cover and communicating with the storage space The interface, a connecting line connected to the connecting port, an intake and exhaust valve disposed on the connecting line, and a pressure gauge disposed on the connecting line. The soaking heat exchange device according to claim 2, wherein the storage tub further includes a discharge port connected to the lower cover and communicating with the storage space to discharge the circulating liquid. The soaking heat exchange device according to claim 2, wherein the storage tub further comprises a liquid window formed on the tub for observing circulating liquid in the storage space. The soaking heat exchange device according to claim 2, wherein the circulating fluid outflow pipe and the circulating fluid inflow pipe are radially disposed on the tub, and the circulating fluid outflow pipe and the lower cover are The distance is less than the distance between the guiding section of the circulating fluid inflow pipe and the lower cover. The soaking heat exchange device according to claim 2, wherein the storage tub further includes an injection port connected to the upper cover and communicating with the storage space to input circulating liquid. The soaking heat exchange device according to claim 1, wherein the guiding section of the circulating fluid inflow pipe is a 90° elbow fitting detachably coupled to the connecting section, the cold coil There is a top edge opposite to the coolant inlet pipe and the coolant discharge pipe, and the discharge port of the circulating fluid inflow pipe overlaps the top edge. The soaking heat exchange device according to claim 1, wherein the guiding section of the circulating fluid inflow pipe is an integral curved pipe, and the cold coil has a opposite to the coolant inlet pipe and the The coolant discharges the top edge of the tube, and the discharge port of the circulating fluid inflow tube overlaps the top edge.