Constant pressure device of heat-conducting oil furnace

Abstract

The utility model discloses a heat conduction oil furnace constant pressure device which comprises a furnace body, the bottom of the furnace body is fixedly connected with a first circulating pipe, the top of the furnace body is fixedly connected with a second circulating pipe, the left side of the furnace body is fixedly connected with a reinforcing plate, and the top between the reinforcing plate and the furnace body is fixedly connected with an expansion box. When the equipment is shut down, the internal pressure and the temperature are reduced, the volume of heat conduction oil is shrunk, the pressure in the furnace body is reduced, and the bottom pressure of the liquid return pressure piece is smaller than the top pressure, so that the liquid return pressure piece moves downwards, and the interior of the vertical pipe is communicated with the interior of the furnace body; and if not, the heat conduction oil in the expansion box is sucked into the furnace body again, and the pressure in the furnace body is kept balanced all the time, so that the device has the functions of discharging and storing the expanded high-pressure heat conduction oil, flexibly and automatically relieving the pressure and balancing the internal pressure when the device runs, and meanwhile, the heat conduction oil is sucked back into the device again when the device is at low pressure. And automatic operation is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat conducting oil furnace technical field, concretely is a kind of heat conducting oil furnace pressure regulating device. BACKGROUND

[0002] Heat conducting oil furnace is directly inserted into organic carrier (heat conducting oil) with electric heater and is directly heated, and through high-temperature oil pump, heated heat conducting oil is transported to heat equipment by liquid phase circulation, then, from the oil outlet of heat equipment, it is returned to electric heating oil furnace and heated, to form a complete circulating heating system.Electric heating heat conducting oil furnace adopts digital display temperature controller to control temperature, with over-temperature alarm, low oil level alarm and overpressure alarm function.

[0003] But internal heat conducting oil expands in high temperature and high pressure process, accelerates internal heating process, so that heat conducting oil furnace internal pressure continues to rise, which is prone to pressure overrun, so that the equipment needs to be shut down to reduce pressure, and the continuous performance is poor, which reduces the equipment operation efficiency. UTILITY MODEL CONTENTS

[0004] In view of the problems in the prior art, the utility model aims at providing a heat conducting oil furnace pressure regulating device to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme.

[0006] A kind of heat conducting oil furnace pressure regulating device, including furnace body, the bottom of the furnace body is fixedly connected with first circulating pipe, the top of the furnace body is fixedly connected with second circulating pipe, the left side of the furnace body is fixedly connected with reinforcing plate, the top between the reinforcing plate and furnace body is fixedly connected with expansion tank, the top of the furnace body is fixedly connected with vertical guide pipe, the vertical guide pipe is screw-connected with liquid discharge pressure piece, one side of the vertical guide pipe is fixedly connected with horizontal pipe, the other end of the horizontal pipe is insertedly connected to the inside of expansion tank;

[0007] The liquid discharge pressure piece includes a sleeve, a vertical pipe, a first spring, a sliding sleeve and a liquid return pressure piece, the sleeve is sleeved and screw-connected to the outside of the top end of the vertical guide pipe, the top end of the vertical pipe is fixedly connected with the sleeve, the bottom end of the vertical pipe is slidingly connected to the inside of the sliding sleeve, the first spring is sleeved on the outside of the vertical pipe, the top end of the first spring is fixedly connected with the sleeve, the bottom end of the first spring is fixedly connected with the sliding sleeve, and the liquid return pressure piece is installed on the sliding sleeve.

[0008] As a further description of the above technical scheme: the liquid return pressure piece comprises a T-shaped rod, a second spring, an I-shaped disc and a lower cover, the bottom end of the T-shaped rod penetrates to the bottom end of the I-shaped disc and is in sliding connection with the bottom end, the second spring is sleeved on the outer side of the T-shaped rod, the top end of the second spring is fixedly connected with the T-shaped rod, the bottom end of the second spring is fixedly connected with the I-shaped disc, the bottom end of the T-shaped rod is fixedly connected with the lower cover, the I-shaped disc penetrates the bottom of the sliding sleeve and is fixedly connected to the bottom, and the top of the lower cover is in extrusion contact with the bottom of the sliding sleeve.

[0009] As a further description of the above technical scheme: the bottom of the sliding sleeve is provided with a through hole, the annular edge of the through hole extends into the annular groove of the I-shaped disc and is fixedly connected with the annular groove, and the I-shaped disc is provided with a vertical hole in communication with the through hole.

[0010] As a further description of the above technical scheme: the bottom of the sliding sleeve is provided with an outer convex ring, the inner side of the bottom end of the vertical pipe is provided with an inner convex ring, and the bottom of the outer convex ring is in vertical extrusion contact with the inner convex ring.

[0011] As a further description of the above technical scheme: the outer side of the vertical pipe is provided with side holes arranged at equal distances.

[0012] As a further description of the above technical scheme: the top of the furnace body is fixedly connected with a pressure gauge.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The device has the advantages of flexible and automatic pressure relief, balancing internal pressure, and automatic operation of the device when the equipment is running. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view of the sectional structure of the utility model;

[0016] Figure 2 It is Figure 1 It is an enlarged schematic view of the structure of the middle A part;

[0017] Figure 3 It is Figure 2 It is an enlarged schematic view of the structure of the middle B part;

[0018] Figure 4 It is a partial three-dimensional structure schematic view of the utility model.

[0019] Explanation of reference numerals in the drawing:

[0020] 1, furnace body; 2, first circulating pipe; 3, second circulating pipe; 4, reinforcing plate; 5, expansion tank; 6, vertical pipe; 61, inner convex ring; 7, liquid discharge pressure piece; 71, sleeve; 72, vertical pipe; 721, side hole; 73, first spring; 74, sliding sleeve; 741, through hole; 742, outer convex ring; 75, liquid return pressure piece; 751, T-shaped rod; 752, second spring; 753, I-shaped disc; 7531, vertical hole; 754, lower cover; 8, cross pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0022] Please refer to Figures 1 to 4 In the utility model, a kind of heat conducting oil furnace constant pressure device, including furnace body 1, the bottom of furnace body 1 is fixedly connected with first circulating pipe 2, the top of furnace body 1 is fixedly connected with second circulating pipe 3, the left side of furnace body 1 is fixedly connected with reinforcing plate 4, the top between reinforcing plate 4 and furnace body 1 is fixedly connected with expansion tank 5, the top of furnace body 1 is fixedly connected with vertical guide pipe 6, vertical guide pipe 6 is screw-connected with liquid discharge pressure piece 7, one side of vertical guide pipe 6 is fixedly connected with cross pipe 8, and the other end of cross pipe 8 is inserted and fixed to the inside of expansion tank 5.

[0023] Liquid discharge pressure piece 7 includes sleeve 71, vertical pipe 72, first spring 73, sliding sleeve 74 and liquid return pressure piece 75, sleeve 71 is sleeved and screw-connected to the top end outside of vertical guide pipe 6, the top end of vertical pipe 72 is fixedly connected with sleeve 71, the bottom end of vertical pipe 72 is slidably connected to the inside of sliding sleeve 74, first spring 73 is sleeved on the outside of vertical pipe 72, the top end of first spring 73 is fixedly connected with sleeve 71, the bottom end of first spring 73 is fixedly connected with sliding sleeve 74, and liquid return pressure piece 75 is installed on sliding sleeve 74.

[0024] The utility model discloses, through furnace body 1 as the device main body, when using through first circulation pipe 2 and second circulation pipe 3 realize oil circuit access flow circulation work, when the internal heat conduction oil flow rate of furnace body 1 increases, and temperature rises, liquid pressure increases, the volume of internal heat conduction oil starts gradually expansion gradually, make the internal pressure of furnace body 1 increase, and utilize the pressure upper limit of inside liquid discharge pressure spare 7 of vertical guide pipe 6, when the expansion of internal heat conduction oil pushes up, the liquid discharge pressure spare 7 of this time is pushed to make the heat conduction oil of expansion discharge through vertical guide pipe 6 and pass through horizontal pipe 8 and discharge into the inside of expansion tank 5, this time sliding sleeve 74 and back liquid pressure spare 75 are pushed up and slide along the vertical pipe 72 extrusion first spring 73, make vertical guide pipe 6 with the internal communication of furnace body 1, make the heat conduction oil of expansion discharge, to maintain the internal pressure balance of furnace body 1, avoid pressure overrun, make its inside always keep stable working pressure, and when equipment shutdown internal pressure drops temperature drops, the volume of heat conduction oil shrinks, this time the pressure of furnace body 1 inside reduces, this time back liquid pressure spare 75 bottom pressure is less than top pressure, makes back liquid pressure spare 75 move down and make vertical pipe 72 inside with the internal communication of furnace body 1, then the heat conduction oil in the inside of expansion tank 5 is inhaled into the inside of furnace body 1, always keeps the internal pressure balance of furnace body 1, to realize the device has the advantages of flexible automatic pressure relief, balance internal pressure when equipment operation, when low pressure, the heat conduction oil is inhaled and returns to the inside of equipment, automatic operation, solve the volume expansion in the prior art, accelerate the internal heating process, make the heat conduction oil furnace inside can produce pressure continuously increase process, just easy to cause pressure easy to overrun, just need to equipment shutdown pressure relief, use continuous performance is not good, reduce equipment operation efficiency Problem.

[0025] Please refer to Figure 3 Wherein: back liquid pressure spare 75 includes T-shaped rod 751, second spring 752, I-shaped disc 753 and lower cover 754, the bottom end of T-shaped rod 751 is through to the bottom end of I-shaped disc 753 and is slidably connected with it, second spring 752 is sleeved on the outside of T-shaped rod 751, the top end of second spring 752 is fixedly connected with T-shaped rod 751, the bottom end of second spring 752 is fixedly connected with I-shaped disc 753, the bottom end of T-shaped rod 751 is fixedly connected with lower cover 754, I-shaped disc 753 is through and is fixedly connected to the bottom of sliding sleeve 74, the top of lower cover 754 is extruded contact with the bottom of sliding sleeve 74.

[0026] The utility model discloses, through furnace body 1 inside heat conduction oil temperature drops pressure reduction, this time the pressure of furnace body 1 inside is less than outside atmospheric pressure, this time lower cover 754 is pressed down by outside high pressure, to drive T-shaped rod 751 along I-shaped disc 753 drop, extrude second spring 752, this time lower cover 754 and sliding sleeve 74 bottom part are separated, make the heat conduction oil in the inside of expansion tank 5 reabsorb into the inside of furnace body 1, avoid heat conduction oil deficiency.

[0027] Please refer to Figure 3 Wherein: the bottom of the sliding sleeve 74 is provided with a through hole 741, the annular edge of the through hole 741 extends into the annular groove of the I-shaped disc 753 and is fixedly connected with it, and the I-shaped disc 753 is provided with a vertical hole 7531 communicated with the through hole 741.

[0028] In the utility model, the through hole 741 on the sliding sleeve 74 cooperates with the vertical hole 7531 to realize the smooth backflow of the heat conducting oil in the expansion tank 5.

[0029] Please refer to Figure 3 Wherein: the bottom of the sliding sleeve 74 is provided with a through hole 741, the annular edge of the through hole 741 extends into the annular groove of the I-shaped disc 753 and is fixedly connected with it, and the I-shaped disc 753 is provided with a vertical hole 7531 communicated with the through hole 741.

[0030] In the utility model, the through hole 741 on the sliding sleeve 74 cooperates with the vertical hole 7531 to realize the smooth backflow of the heat conducting oil in the expansion tank 5.

[0031] Please refer to Figure 2 Wherein: the outer side of the vertical pipe 72 is provided with equidistantly arranged side holes 721.

[0032] In the utility model, the through hole 741 on the sliding sleeve 74 cooperates with the vertical hole 7531 to realize the smooth backflow of the heat conducting oil in the expansion tank 5.

[0033] Please refer to Figure 1 Wherein: the top of the furnace body 1 is fixedly connected with a pressure gauge 9.

[0034] In the utility model, the through hole 741 on the sliding sleeve 74 cooperates with the vertical hole 7531 to realize the smooth backflow of the heat conducting oil in the expansion tank 5.

[0035] The above is only the preferred specific embodiment of the utility model; but the protection scope of the utility model is not limited to this. Any skilled person in the art, according to the technical scheme and the improvement concept of the utility model, is equivalent to replace or change in the technical range disclosed by the utility model, and should be covered in the protection scope of the utility model.

Claims

1. A constant pressure device for a heat conducting oil furnace, comprising a furnace body (1), characterized in that: The bottom of the furnace body (1) is fixedly connected with a first circulating pipe (2), the top of the furnace body (1) is fixedly connected with a second circulating pipe (3), the left side of the furnace body (1) is fixedly connected with a reinforcing plate (4), the top between the reinforcing plate (4) and the furnace body (1) is fixedly connected with an expansion tank (5), the top of the furnace body (1) is fixedly connected with a vertical guide pipe (6), the upper end of the vertical guide pipe (6) is threadedly connected with a liquid discharge pressure piece (7), one side of the vertical guide pipe (6) is fixedly connected with a horizontal pipe (8), and the other end of the horizontal pipe (8) is inserted and fixed into the inside of the expansion tank (5). The liquid discharge pressure piece (7) comprises a clamping sleeve (71), a vertical pipe (72), a first spring (73), a sliding sleeve (74) and a liquid return pressure piece (75), the clamping sleeve (71) is sleeved and threadedly connected to the outside of the top end of the vertical guide pipe (6), the top end of the vertical pipe (72) is fixedly connected with the clamping sleeve (71), the bottom end of the vertical pipe (72) is slidingly connected into the inside of the sliding sleeve (74), the first spring (73) is sleeved on the outside of the vertical pipe (72), the top end of the first spring (73) is fixedly connected with the clamping sleeve (71), the bottom end of the first spring (73) is fixedly connected with the sliding sleeve (74), and the liquid return pressure piece (75) is mounted on the sliding sleeve (74).

2. The constant pressure device for a heat transfer oil furnace according to claim 1, characterized by: The liquid return pressure piece (75) comprises a T-shaped rod (751), a second spring (752), an I-shaped disc (753) and a lower cover (754), the bottom end of the T-shaped rod (751) penetrates into the bottom end of the I-shaped disc (753) and is slidingly connected therewith, the second spring (752) is sleeved on the outside of the T-shaped rod (751), the top end of the second spring (752) is fixedly connected with the T-shaped rod (751), the bottom end of the second spring (752) is fixedly connected with the I-shaped disc (753), the bottom end of the T-shaped rod (751) is fixedly connected with the lower cover (754), the I-shaped disc (753) penetrates and is fixedly connected to the bottom of the sliding sleeve (74), and the top of the lower cover (754) is in extrusion contact with the bottom of the sliding sleeve (74).

3. The constant pressure device for a heat transfer oil furnace according to claim 2, characterized in that: The bottom of the sliding sleeve (74) is provided with a through hole (741), the annular edge of the through hole (741) extends into the annular groove of the I-shaped disc (753) and is fixedly connected therewith, and the I-shaped disc (753) is provided with a vertical hole (7531) which is in communication with the through hole (741).

4. The constant pressure device for a heat transfer oil furnace according to claim 1, characterized in that: The bottom outside of the sliding sleeve (74) is provided with an outer convex ring (742), the inside of the bottom end of the vertical guide pipe (6) is provided with an inner convex ring (61), and the bottom of the outer convex ring (742) is in vertical extrusion contact with the inner convex ring (61).

5. The constant pressure device for a heat transfer oil furnace according to claim 1, characterized by: The outside of the vertical pipe (72) is provided with side holes (721) which are arranged at equal distances.

6. The constant pressure device for a heat transfer oil furnace according to claim 1, characterized by: The top of the furnace body (1) is fixedly connected with a pressure gauge (9).

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