CN202254995U - heat pipe heat exchanger - Google Patents

Abstract

The utility model relates to the technical field of diesel engine flue gas waste heat recycling equipment, in particular to a heat pipe exchanger, which comprises a smoke cavity shell, a water jacket shell, a heat preservation layer, a water inlet pipe, a water outlet pipe and at least one heat pipe; smoke chamber casing fixed mounting is inside water jacket casing, and water jacket casing fixed mounting has the heat preservation between inside the shell, and the cavity between water jacket casing and the smoke chamber casing forms the inner water layer, and shell right part lower extreme is fixed with the inlet tube, and shell left part upper end is fixed with the outlet pipe, is fixed with the heat pipe on the upper plate of smoke chamber casing, and the upper end of heat pipe is located the inner water layer of smoke chamber casing top, and the lower extreme of heat pipe is located the inner chamber of smoke chamber casing. The utility model has the advantages of reasonable and compact structure, convenient to use, it makes the steam in the tobacco cavity casing heat the water in the inner water layer rapidly high-efficiently through the heat pipe, has safety, high efficiency, simple and convenient, easy characteristics of maintaining the use.

Description

heat pipe heat exchanger

technical field

The utility model relates to the technical field of waste heat recovery and utilization equipment of diesel engine flue gas, and is a heat pipe heat exchanger.

Background technique

At present, most oil drilling wells are powered by high-power diesel engines. The exhaust gas from the diesel engine is directly discharged into the atmosphere. The temperature of the exhaust gas from the diesel engine is very high, generally above 450 degrees Celsius, which accounts for about 3% of the low calorific value of fuel oil. Fifteen percent of the heat energy is taken away by the exhaust gas, 15 percent of the heat energy is absorbed by the cooling water, and only 36 to 39 percent of the heat energy is used to generate power. The heat energy carried by the flue gas can be recovered and utilized, which can save a lot of energy and generate huge economic benefits. In the early 1970s, the waste heat recovery and utilization technology of diesel engines was widely promoted abroad, and the heat energy of diesel engine exhaust gas and cooling water was converted for heating, air conditioning and refrigeration. In the early 1990s, my country's oil drilling industry also carried out research and experiments, and gained a lot of experience in the application and research of waste heat recovery from high-power diesel engines. These two important technical indicators that are inversely proportional to heat exchange efficiency have not been popularized and applied.

Contents of the invention

The utility model provides a heat pipe heat exchanger which overcomes the deficiencies of the prior art and can effectively solve the problems of exhausted flue gas waste of a large amount of heat energy and low recycling efficiency in existing oil drilling diesel engines.

The technical solution of the utility model is achieved through the following measures: a heat pipe heat exchanger, including a smoke chamber shell, a water jacket shell, an outer shell, an insulation layer, a water inlet pipe, a water outlet pipe and no less than one heat pipe; The smoke cavity shell is fixedly installed inside the water jacket shell, and the water jacket shell is fixedly installed inside the shell. There is an insulation layer between the water jacket shell and the shell, and the cavity between the water jacket shell and the smoke cavity shell forms In the inner water layer, a water inlet pipe is fixed at the lower end of the right part of the shell, and a water outlet pipe is fixed at the upper end of the left part of the shell. The inner ports of the water inlet pipe and the water outlet pipe are respectively connected with the inner water layer; The smoke outlet, the smoke inlet and the smoke outlet are respectively connected with the inner cavity of the smoke cavity shell, and a heat pipe is fixed on the upper plate of the smoke cavity shell, and the upper end of the heat pipe is located in the inner water layer above the smoke cavity shell. The lower end of the heat pipe is located in the inner chamber of the smoke cavity housing.

Below is the further optimization or/and improvement to above-mentioned utility model technical scheme:

The interior of the above-mentioned smoke chamber shell can be fixedly installed with no less than two partitions arranged in a front-rear misaligned interval.

The above-mentioned smoke cavity shell can be fixed with a convection tube that runs through the upper plate of the smoke cavity shell and the lower plate of the smoke cavity shell. The upper port of the convection tube communicates with the inner water layer above the smoke cavity shell, and the lower port of the convection tube It communicates with the inner water layer below the smoke chamber shell.

The above-mentioned heat pipes can be uniformly distributed and fixed on the upper plate of the smoke chamber shell in a rectangular array, one-third of the heat pipes are located inside the inner cavity of the smoke chamber shell, and two-thirds of the heat pipes are located inside the inner water layer.

The above-mentioned heat pipe may be a gravity self-balancing heat pipe.

The diameter of the above-mentioned heat pipe can be 32 millimeters, and the length of the heat pipe can be 300 millimeters.

A water temperature gauge capable of measuring the temperature of the inner water layer and a water pressure gauge capable of measuring the pressure of the inner water layer can be fixedly installed on the front portion of the above-mentioned casing, and hanging lugs can be fixed on the left and right parts of the upper end of the casing respectively.

The lower part of the shell can be fixed with a base.

The utility model has a reasonable and compact structure and is easy to use. The hot air in the smoke chamber casing can heat the water in the inner water layer quickly and efficiently through the heat pipe, and has the characteristics of safety, high efficiency, simplicity, and easy maintenance and use.

Description of drawings

Accompanying drawing 1 is the partial cross-sectional structural schematic diagram of the front view of the best embodiment of the utility model.

Accompanying drawing 2 is a top view partial cross-sectional structural schematic diagram of accompanying drawing 1.

Accompanying drawing 3 is the schematic cross-sectional structure diagram of A-A place in accompanying drawing 2.

The codes in the drawings are: 1 is the smoke cavity shell, 2 is the water jacket shell, 3 is the shell, 4 is the insulation layer, 5 is the water inlet pipe, 6 is the water outlet pipe, 7 is the heat pipe, and 8 is the inner water layer , 9 is a smoke inlet, 10 is a smoke outlet, 11 is a dividing plate, 12 is a convection pipe, 13 is a water temperature gauge, 14 is a water pressure gauge, 15 is a lifting lug, and 16 is a base.

Detailed ways

The utility model is not limited by the following examples, and the specific implementation manner can be determined according to the technical scheme of the utility model and actual conditions.

In this utility model, for the convenience of description, the description of the relative positional relationship of each component is described according to the layout of the drawings in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. It is determined according to the layout direction of the drawings in the description.

Below in conjunction with embodiment and accompanying drawing, the utility model is further described:

As shown in Figures 1, 2, and 3, the heat pipe heat exchanger includes a smoke cavity shell 1, a water jacket shell 2, an outer shell 3, an insulation layer 4, a water inlet pipe 5, a water outlet pipe 6 and no less than one heat pipe 7; The smoke cavity shell 1 is fixedly installed inside the water jacket shell 2, and the water jacket shell 2 is fixedly installed inside the shell 3. There is an insulation layer 4 between the water jacket shell 2 and the shell 3, and the water jacket shell 2 and the shell 3 The cavity between the smoke chamber shells 1 forms an inner water layer 8, the lower end of the right part of the casing 3 is fixed with a water inlet pipe 5, and the upper end of the left part of the casing 3 is fixed with a water outlet pipe 6, and the inner ports of the water inlet pipe 5 and the water outlet pipe 6 are respectively connected to the The inner water layer 8 is connected; the left end of the shell 3 has a smoke inlet 9, and the right end of the shell 3 has a smoke outlet 10, and the smoke inlet 9 and the smoke outlet 10 are respectively connected with the inner cavity of the smoke chamber shell 1, and the smoke A heat pipe 7 is fixed on the upper plate of the chamber shell 1 , the upper end of the heat pipe 7 is located in the inner water layer 8 above the smoke chamber shell 1 , and the lower end of the heat pipe 7 is located in the inner cavity of the smoke chamber shell 1 . The heat pipe 7 is an existing well-known high-efficiency heat transfer element with high thermal conductivity. It is a closed pipe body with a working liquid inside, and conducts heat through the vapor-liquid phase change of the internal working liquid. The thermal resistance is very small, and the unit The thermal conductivity of the heavy heat pipe 7 is 30 to 300 times that of metals such as silver, copper, and aluminum. The heat pipe 7 is preferably welded and fixed on the flue shell. Through the utility model, the waste heat of the high-temperature flue gas generated by the drilling diesel engine and diesel generator of the drilling team can be recovered and utilized. Heat the inner water layer 8 quickly and efficiently through the heat pipe 7, output hot water through the outlet pipe 6, and heat it through the heat preservation water tank, water pump, and water pipe for heating, heating and antifreezing, so as to save energy and reduce consumption. cost purposes. The steam in the inner cavity of the heat pipe 7 is in a saturated state. The pressure of the saturated steam is determined by the saturation temperature. The pressure drop of the saturated steam flowing from the evaporation section to the condensation section is very small. According to the equation in thermodynamics, the temperature drop is also very small, so The heat pipe 7 has excellent isothermal properties. The heat pipe 7 can independently change the heating area of the evaporation section or the cooling section, that is, input heat with a smaller heating area and output heat with a larger cooling area, or the heat pipe 7 can input heat with a larger heat transfer area and use a larger heat transfer area. The small cooling area outputs heat, which can change the heat flux density and solve some heat transfer problems that are difficult to solve by other methods. Because each heat pipe 7 is a relatively independent airtight unit, the evaporation section and the condensation section of the heat pipe 7 are in the upper and lower spaces of a whole. Separation can effectively avoid the flow of cold and hot fluids; by adjusting the number of heat pipes 7 or the heat transfer area ratio of the hot and cold sides of the heat pipes 7, the wall temperature of the heat pipes 7 can be raised above the dew point temperature, and dew point corrosion can also be effectively prevented. The variable cross-section structure design ensures the flow of fluid at the inlet and outlet, and can also achieve the purpose of self-cleaning and effectively prevent dust accumulation; since there are no rotating parts, it is a static device and has no additional power consumption, so the operation and maintenance costs are low; It has a very good function of silencing and extinguishing fire. When the flue gas passes through the flue, the pressure is always balanced. After the sparks in the flue gas collide with the heat pipe 7 for many times, they will be extinguished quickly, which can realize the function of silencing and extinguishing fire. In addition, it also has The operation and maintenance are simple, no spare parts are needed, even if some heat pipes 7 are damaged, the advantages of normal use are not affected.

According to actual needs, the above heat pipe heat exchanger can be further optimized or/and improved:

As shown in Figures 1, 2, and 3, there are no less than two partitions 11 arranged in front and rear misaligned intervals fixedly installed inside the smoke cavity housing 1, and the inner cavity of the smoke cavity shell 1 is separated by the partitions 11. A flue that turns back and forth is formed. The partition 11 makes the inner cavity of the smoke chamber shell 1 form an S-shaped flue, which prolongs the residence time of the flue gas in the smoke chamber shell 1, thereby increasing the heating time of the heat pipe 7 and the flue shell, so that The water temperature in the inner water layer 8 rises rapidly.

As shown in Figures 1, 2, and 3, the smoke cavity shell 1 is fixed with a convection tube 12 that runs through the upper plate of the smoke cavity shell 1 and the lower plate of the smoke cavity shell 1, and the upper port of the convection tube 12 is connected to the smoke cavity shell. The inner water layer 8 above the body 1 is connected, and the lower port of the convection pipe 12 is connected with the inner water layer 8 below the smoke chamber shell 1 . The convection pipe 12 passes through the flue shell, and its two ends communicate with the inner water layer 8 above and below the smoke chamber shell 1 respectively, which can absorb and conduct heat and accelerate heat transfer.

As shown in Figures 1, 2, and 3, the heat pipes 7 are uniformly distributed and fixed on the upper plate of the smoke cavity housing 1 in a rectangular array, and one-third of the heat pipes 7 are located inside the inner cavity of the smoke cavity shell 1. Two-thirds are located inside the inner water layer 8 .

As shown in accompanying drawings 1, 2 and 3, the heat pipe 7 is a gravity self-balancing heat pipe.

As shown in accompanying drawing 1,2,3, the diameter of heat pipe 7 is 32 millimeters, and the length of heat pipe 7 is 300 millimeters.

As shown in accompanying drawing 1,2,3, the front portion of shell 3 is fixedly installed with the water temperature gauge 13 that can measure inner water layer 8 temperature and the water pressure gauge 14 that can measure inner water layer 8 pressure, the upper left part of shell 3 and the right part are fixed with lugs 15 respectively. The lifting lug 15 can be conveniently dispatched and installed.

As shown in accompanying drawings 1, 2 and 3, a base 16 is fixed to the bottom of the housing 3 .

The above technical features constitute the best embodiment of the utility model, which has strong adaptability and best implementation effect, and non-essential technical features can be increased or decreased according to actual needs to meet the needs of different situations.

The use process of the best embodiment of the utility model: firstly, connect the exhaust pipe of the diesel engine with the smoke inlet 9, the smoke outlet 10 is connected with the atmosphere, connect the water outlet joint of the heat preservation water tank with the water inlet pipe 5, Connect the water outlet pipe 6 with the inlet pipe of the object to be heated such as a radiator, a heater, etc.; then, the exhaust gas discharged from the exhaust pipe of the diesel engine enters the inner cavity of the smoke cavity housing 1 through the smoke inlet 9, and the heat pipe 7 The lower end of the heat pipe is heated, and the heat is quickly transferred to the upper end of the heat pipe 7 to heat the water in the inner water layer 8 above the smoke chamber shell 1, and at the same time, the exhaust gas with heat in the inner cavity of the smoke chamber shell 1, the water in the inner water layer 8 below is heated. Due to the temperature difference between the water in the upper and lower inner water layer 8 of the smoke cavity shell 1, the water is automatically circulated and convected through the convection pipe 12 to heat up rapidly; finally, the exhaust gas is cooled and discharged from the smoke chamber. Exhaust in the mouth 10 enters atmosphere, and the water that is heated flows out by outlet pipe 6, enters the inlet pipe of radiator, heater etc.

Claims (10)

1. A heat pipe heat exchanger, characterized in that it includes a smoke cavity shell, a water jacket shell, a shell, an insulation layer, a water inlet pipe, a water outlet pipe and no less than one heat pipe; the smoke cavity shell is fixedly installed on the water jacket Inside the shell, the water jacket shell is fixedly installed inside the shell, there is an insulation layer between the water jacket shell and the shell, the cavity between the water jacket shell and the smoke chamber shell forms an inner water layer, and the lower end of the right part of the shell is fixed There is a water inlet pipe, and a water outlet pipe is fixed on the upper end of the left part of the casing, and the inner ports of the water inlet pipe and the water outlet pipe are respectively connected with the inner water layer; the left end of the casing has a smoke inlet, the right end of the casing has a smoke outlet, the smoke inlet and the outlet The smoke ports are respectively connected with the inner cavity of the smoke cavity shell, and a heat pipe is fixed on the upper plate of the smoke cavity shell, the upper end of the heat pipe is located in the inner water layer above the smoke cavity shell, and the lower end of the heat pipe is located at the bottom of the smoke cavity shell. Inside the lumen. 2. The heat pipe heat exchanger according to claim 1, characterized in that there are not less than two baffles arranged at intervals in the front and back of the smoke cavity shell, and the inner cavity of the smoke cavity shell passes through the baffles. The separation forms a flue that turns back and forth. 3. The heat pipe heat exchanger according to claim 1 or 2, characterized in that a convection tube passing through the upper plate of the smoke cavity shell and the lower plate of the smoke cavity shell is fixed on the smoke cavity shell, and the upper port of the convection tube is in contact with the bottom plate of the smoke cavity shell. The inner water layer above the smoke chamber shell is connected, and the lower port of the convection pipe is connected with the inner water layer below the smoke chamber shell. 4. The heat pipe heat exchanger according to claim 1 or 2, characterized in that the heat pipes are evenly distributed and fixed on the upper plate of the smoke chamber shell in a rectangular array, and one-third of the heat pipes are located inside the inner cavity of the smoke chamber shell. Two-thirds of the heat pipe is located inside the inner water layer. 5. The heat pipe heat exchanger according to claim 3, characterized in that the heat pipes are evenly distributed and fixed on the upper plate of the smoke chamber shell in a rectangular array, one-third of the heat pipes are located inside the inner cavity of the smoke chamber shell, and the heat pipes Two-thirds are located inside the inner water layer. 6. The heat pipe heat exchanger according to claim 4, characterized in that the heat pipe is a gravity self-balancing heat pipe. 7. The heat pipe heat exchanger according to claim 5, characterized in that the heat pipe is a gravity self-balancing heat pipe. 8. The heat pipe heat exchanger according to claim 7, wherein the diameter of the heat pipe is 32 millimeters, and the length of the heat pipe is 300 millimeters. 9. The heat pipe heat exchanger according to claim 8, characterized in that a water temperature gauge capable of measuring the temperature of the inner water layer and a water pressure gauge capable of measuring the pressure of the inner water layer are fixedly installed on the front of the casing, and the upper left part of the casing and the right part are respectively fixed with lifting lugs. 10. The heat pipe heat exchanger according to claim 9, characterized in that a base is fixed to the lower part of the shell.

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