CN214384513U

CN214384513U - Device for preventing backflow of adiabatic acceleration calorimeter

Info

Publication number: CN214384513U
Application number: CN202023337987.6U
Authority: CN
Inventors: 林吉超; 董斌; 姜仁龙; 曹怀祥
Original assignee: Shandong Jinte Safety Technology Co ltd
Current assignee: Shandong Jinte Safety Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-12
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to the technical field of adiabatic acceleration calorimeter, in particular to a device for preventing backflow of an adiabatic acceleration calorimeter, the bottom of a test ball is connected with a sample thermocouple, the upper end of the test ball is provided with a test ball joint, an inner lining pipe with the upper caliber smaller than the lower caliber is arranged in the test ball joint, the test ball joint is communicated with a straight pipe through a connecting joint, a spiral pipe with the closed bottom is arranged in the connecting joint, the straight pipe is communicated with a four-way joint, condensed backflow liquid is collected in the spiral pipe, the communication between the interior of the test ball and the straight pipe can not influence the test pressure through the arrangement of the inner lining pipe and the connecting joint, the condensed backflow liquid flows back to the interior of the spiral pipe and can not flow back to the interior of the test ball through the spiral pipe in the connecting joint, thereby reducing the overlong temperature rise time caused by backflow heat absorption during the thermal stability test of substances, and covering micro heat release, the influence of factors such as false heat release caused by overheating on the experimental result.

Description

Device for preventing backflow of adiabatic acceleration calorimeter

Technical Field

The utility model relates to an adiabatic acceleration calorimeter technical field specifically is an adiabatic acceleration calorimeter prevents device of backward flow.

Background

The out-of-control reaction in the fine chemical production is an important reason for accidents, and in order to guarantee the production safety of enterprises and effectively prevent accidents, it is necessary to perform the safety risk assessment of the fine chemical reaction, determine the risk level and take effective management and control measures. Meanwhile, the design of safety facilities can be improved according to related evaluation results, risk control measures are perfected, and the safe and effective production of enterprises is guaranteed. The reaction safety risk assessment needs more types of equipment, and besides some conventional testers, necessary equipment also comprises a differential scanning calorimeter, a thermal stability screening calorimeter, an adiabatic acceleration calorimeter, a normal pressure reaction calorimeter, a high pressure reaction calorimeter and the like.

Adiabatic acceleration calorimeter technology can simulate potential runaway reactions and quantify the risk of heat, pressure of certain chemicals. The corresponding instrument is simple to use, convenient to operate and high in sensitivity, samples in any physical state can be tested, and results are convenient to process and analyze. This technology has been widely used in adiabatic safe heating since its development.

The existing adiabatic acceleration calorimeter is connected with a test pool part which is a section of vertical metal pipeline (generally 1/8 inches), and a pressure pipe of the test pool part, a connecting valve extending out of a hearth and a pressure sensor part cannot be thermally dissipated. The sample reaches the boiling point along with the temperature rise of the hearth, so that condensation backflow is easily caused, the problems of overlong testing time, covered micro decomposition heat release, false heat release caused by excessive thermal compensation and the like are caused.

Patent No. CN105675645A discloses an anti-return part for adiabatic calorimeter, including adiabatic heat test ball, anti-return pipe fitting, support column: this anti-return pipe fitting is arranged in installing adiabatic calorimetric test ball, reach the pipe diameter that reduces used test ball, thereby reduce the steam volume in the high temperature pipeline among the test process, in order to reach the purpose that reduces backward flow liquid, thereby make the reaction heat that obtains of measurement better accurate, the test is unlikely to suspend because of the backward flow effect, above-mentioned anti-return part can the following problem appear when using, because this anti-return part can occupy the space in more adiabatic heat test ball, can influence the test result when the experiment, and this anti-return pipe fitting installation, it is inconvenient to dismantle, although the annular groove of intraductal equipartition can make partly backward flow liquid get into it inside, still have the backward flow liquid along inside outside space and the adiabatic heat test ball of middle part aperture entering, thereby influence the experimental result.

Disclosure of Invention

The utility model aims at providing a device that adiabatic acceleration calorimeter prevents backward flow to above-mentioned existing adiabatic acceleration calorimeter appears influencing the experimental result and current anti-reflux device effect is unsatisfactory, the inconvenient scheduling problem of dismouting because of the backward flow easily when using.

In order to solve the above problem, the utility model provides a following technical scheme: a device for preventing backflow of a heat insulation acceleration calorimeter comprises a test ball, wherein the test ball is placed in a sealed cavity formed by a heat insulation furnace and an upper furnace cover, the upper furnace cover is arranged at the bottom of a supporting plate, two ends of the supporting plate are connected with two linear driving devices, the linear driving devices drive the upper furnace cover to move up and down, the heat insulation furnace is arranged in a lower box body, the upper furnace cover is arranged in the upper box body, the test ball and a pressure sensor pipeline are communicated with a four-way joint, the pressure sensor is connected with a pressure sensor pipeline, the bottom of the test ball is connected with a sample thermocouple, the upper end of the test ball is provided with a test ball joint, a lining pipe with an upper caliber smaller than a lower caliber is arranged in the test ball joint, the test ball joint is communicated with a straight pipe through a connecting joint, and a spiral pipe with a closed bottom is arranged in the connecting joint, the straight pipe is communicated with the four-way joint, and the condensed reflux liquid is collected into the spiral pipe.

Furthermore, the test ball joint is communicated with the inside of the test ball, the lining pipe comprises a cylindrical pipe and a conical pipe, the cylindrical pipe is embedded into the test ball joint, and the diameter of the bottom of the conical pipe is larger than that of the cylindrical pipe.

Furthermore, the diameter of the upper opening of the conical tube is smaller than that of the lower bottom of the conical tube.

Further, the bottom of the connecting joint and the upper part of the testing ball joint are fastened through a second nut.

Furthermore, the upper end of the spiral pipe is a funnel opening, and a gap is reserved between the outer edge of the upper opening of the funnel opening and the inner diameter of the upper part of the connecting joint.

Furthermore, the upper end of the spiral pipe is communicated with the bottom end of the funnel opening, and the bottom end of the spiral pipe is connected with the inner wall of the connecting joint in a sealing mode.

Furthermore, a matching hole is arranged at the joint of the connecting joint and the conical pipe of the lining pipe, the shape and the size of the matching hole correspond to those of the conical pipe, and a water storage tank is arranged on the upper end surface of the matching hole.

Furthermore, the connecting joint and the straight pipe are fastened through a first nut.

Furthermore, the rear parts of the upper box body and the lower box body are provided with heat dissipation fans.

Furthermore, the straight pipe and the sample thermocouple both penetrate through the inner part of the upper furnace cover.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the inner lining pipe and the connecting joint are arranged, so that the communication between the interior of the test ball and the straight pipe cannot influence the test pressure, the disassembly is convenient, the condensed and refluxed liquid is refluxed into the spiral pipe through the spiral pipe in the connecting joint and cannot be refluxed into the interior of the test ball, and therefore the influences of factors such as overlong temperature rise time, small heat release cover, false heat release caused by overheating and the like on the experimental result due to heat absorption of reflux of the material in the thermal stability test are reduced;

2. the condensate in the connecting joint is less, the opening at the upper part of the conical pipe of the lining pipe is small, the condensate cannot flow into the test ball through the lining pipe due to the liquid tension, and a part of the condensate can be stored due to the water storage tank at the upper end of the matching hole at the bottom of the connecting joint.

3. The spiral pipe upper end is connected with the flare opening, and the upper end of flare opening is used for retrieving the condensate in the straight pipe, because liquid tension, most condensate can be received by the flare opening and in being collected the spiral pipe, and the condensate of the little partial condensate and spiral pipe outer wall can flow into to the aqua storage tank.

4. The reason causing the condensation reflux is that the temperature difference between the upper part of the straight pipe and the inside of the test ball is large, so the condensate is mainly concentrated in the straight pipe, the problem that the experimental effect is inaccurate due to the condensation reflux can be solved to the maximum extent by collecting the condensate in the straight pipe, a small part of the condensate (the inner part of the connecting joint and the outer wall of the spiral pipe) is collected by the water storage tank, and finally, the small amount of the condensate cannot enter the inside of the test ball due to the small opening of the conical pipe on the upper part of the inner lining pipe, and all condensation recovery and treatment positions are integrated, so the effect of preventing the condensation reflux is optimal.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a top view of an adiabatic acceleration calorimeter arrangement for use in the present invention;

fig. 2 is a sectional view of the present invention taken along the line a-a of fig. 1;

fig. 3 is an enlarged schematic view of the structure at a in fig. 2 according to the present invention;

fig. 4 is an exploded view of the backflow prevention device used in the present invention.

In the figure: 1. a lower box body; 2. an upper box body; 3. a heat dissipation fan; 4. a support plate; 5. putting a furnace cover; 6. a heat insulation furnace; 7. testing the ball; 8. a four-way joint; 9. a pressure sensor conduit; 10. a pressure sensor; 11. a sample thermocouple; 12. a straight pipe; 13. connecting a joint; 14. a liner tube; 15. a first nut; 131. a circular tube; 132. a funnel opening; 133. a spiral tube; 134. a mating hole; 135. a water storage tank; 141. a cylindrical tube; 142. a tapered tube; 71. testing the ball joint; 72. a second nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figures 1-4

Example one

The utility model provides a following technical scheme: the utility model provides a device that adiabatic acceleration calorimeter prevented backward flow, includes test ball 7, test ball 7 place in the sealed cavity that adiabatic furnace 6 and last bell 5 are constituteed, last bell 5 set up in backup pad 4 bottom, the both ends and two linear drive device of backup pad 4 are connected, linear drive device drives upper furnace lid 5 up-and-down motion, adiabatic furnace 6 set up the inside of box 1 down, last bell 5 set up the inside at last box 2, the rear portion of going up box 2 and box 1 down all is provided with heat dissipation fan 3. Both the straight tube 12 and the sample thermocouple 11 penetrate the inside of the upper furnace cover 5. The testing ball 7 and the pressure sensor pipeline 9 are both communicated with a four-way joint 8, the pressure sensor is connected with the pressure sensor pipeline 9, the bottom of the testing ball 7 is connected with a sample thermocouple 11, the upper end of the testing ball 7 is provided with a testing ball joint 71, a lining pipe 14 with the upper caliber smaller than the lower caliber is arranged in the testing ball joint 71, the testing ball joint 71 is communicated with a straight pipe 12 through a connecting joint 13, a spiral pipe 133 with the closed bottom is arranged in the connecting joint 13, the straight pipe 12 is communicated with the four-way joint 8, condensed reflux liquid is collected into the spiral pipe 133, the communication between the interior of the testing ball 7 and the straight pipe 12 cannot influence the testing pressure through the lining pipe 14 and the connecting joint 13, and the condensed reflux liquid flows back to the interior of the spiral pipe 133 and cannot flow back to the interior of the testing ball 7 through the spiral pipe 133 in the connecting joint 13, therefore, the influence of factors such as overlong temperature rise time, tiny heat release covered, false heat release caused by overheating and the like on the experimental result due to reflux heat absorption of the substance in the thermal stability test is reduced.

The test ball joint 71 is communicated with the inside of the test ball 7, the lining pipe 14 comprises a cylindrical pipe 141 and a conical pipe 142, the cylindrical pipe 141 is embedded in the test ball joint 71, and the diameter of the bottom of the conical pipe 142 is larger than that of the cylindrical pipe 141. The diameter of the upper opening of the tapered pipe 142 is smaller than the diameter of the lower bottom of the tapered pipe 142, so that the condensate in the connection joint 13 is reduced, and the opening of the upper portion of the tapered pipe 142 of the lining pipe 14 is reduced.

The bottom of the connection joint 13 is fastened to the upper part of the test ball joint 71 by means of a second nut 72. The connection joint 13 and the straight pipe 12 are fastened together by a first nut 15.

The upper end of the spiral pipe 133 is a funnel opening 132, and a gap is left between the outer edge of the upper opening of the funnel opening 132 and the inner diameter of the upper part of the connecting joint 13. The upper end of the spiral pipe 133 is communicated with the bottom end of the funnel opening 132, and the bottom end of the spiral pipe 133 is connected with the inner wall of the connecting joint 13 in a sealing manner. The joint of the connecting joint 13 and the tapered pipe 142 of the lining pipe 14 is provided with a matching hole 134, the shape and the size of the matching hole 134 correspond to those of the tapered pipe 142, the upper end surface of the matching hole 134 is provided with a water storage tank 135, the upper end of the spiral pipe 133 is connected with the funnel opening 132, the upper end of the funnel opening 132 is used for recovering condensate in the straight pipe 12, most of the condensate can be received by the funnel opening 132 and collected into the spiral pipe 133 due to liquid tension, and a small part of the condensate and the condensate on the outer wall of the spiral pipe 133 can flow into the water storage tank 135.

When the utility model is used, the lining pipe 14 is firstly installed in the testing ball joint 71, then the test ball joint 71 is connected and fastened with the bottom end of the connecting joint 13 through a second nut 72, the upper end of the connecting joint 13 is connected and fastened with the bottom end of the straight pipe 12 through a first nut 15, since the reason for causing the condensation reflux is that the temperature difference between the upper portion of the straight tube 12 and the inside of the test ball 7 is large, therefore, the condensate is mainly concentrated in the straight pipe 12, the problem of inaccurate experimental effect caused by condensation backflow can be solved to the maximum extent by collecting the condensate in the straight pipe 12, a small part of the condensate (the inside of the connecting joint 13 and the outer wall of the spiral pipe 133) is collected by the water storage tank 135, and finally, a small amount of the condensate cannot enter the inside of the test ball 7 due to the small opening of the upper conical pipe 142 of the inner lining pipe 14, so that all condensation recycling and treatment are integrated, and the effect of preventing the condensation backflow is optimal.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a device that adiabatic acceleration calorimeter prevented backward flow, includes test ball (7), test ball (7) place in the sealed cavity that adiabatic furnace (6) and last lid (5) are constituteed, last lid (5) set up in backup pad (4) bottom, the both ends and two linear drive device of backup pad (4) are connected, lid (5) up-and-down motion are gone up in the linear drive device drive, adiabatic furnace (6) set up the inside of box (1) down, last lid (5) set up the inside of last box (2), its characterized in that: test ball (7) and pressure sensor pipeline (9) all communicate with four-way connection (8), pressure sensor is connected with pressure sensor pipeline (9), the bottom and the sample electric thermocouple (11) of test ball (7) are connected, test ball (7) upper end be provided with test ball joint (71), test ball joint (71) in be provided with interior bushing pipe (14) that the bore is less than bore down, test ball joint (71) communicate with straight tube (12) through coupling joint (13), coupling joint (13) inside be provided with bottom confined spiral pipe (133), straight tube (12) and four-way connection (8) intercommunication, in condensate reflux liquid was collected spiral pipe (133).

2. An adiabatic acceleration calorimeter backflow preventing device according to claim 1, wherein: the testing ball joint (71) is communicated with the inside of the testing ball (7), the lining pipe (14) comprises a cylindrical pipe (141) and a conical pipe (142), the cylindrical pipe (141) is embedded into the testing ball joint (71), the outer diameter of the cylindrical pipe (141) is smaller than the inner diameter of the testing ball joint (71), and the diameter of the bottom of the conical pipe (142) is larger than that of the cylindrical pipe (141).

3. An adiabatic acceleration calorimeter backflow preventing device according to claim 2, wherein: the diameter of the upper opening of the conical pipe (142) is smaller than the diameter of the lower bottom of the conical pipe (142).

4. An adiabatic acceleration calorimeter backflow preventing device according to claim 3, wherein: the bottom of the connecting joint (13) is fastened with the upper part of the testing ball joint (71) through a second nut (72), and the connecting joint (13) is fastened with the straight pipe (12) through a first nut (15).

5. An adiabatic acceleration calorimeter backflow preventing device according to claim 4, wherein: the upper end of the spiral pipe (133) is provided with a funnel opening (132), a gap is reserved between the outer edge of the upper opening of the funnel opening (132) and the inner diameter of the upper part of the connecting joint (13), the upper end of the spiral pipe (133) is communicated with the bottom end of the funnel opening (132), and the bottom end of the spiral pipe (133) is connected with the inner wall of the connecting joint (13) in a sealing mode.

6. An adiabatic acceleration calorimeter return-flow preventing device according to claim 5, wherein: the joint of the connecting joint (13) and the tapered pipe (142) of the lining pipe (14) is provided with a matching hole (134), the shape and the size of the matching hole (134) correspond to those of the tapered pipe (142), and the upper end face of the matching hole (134) is provided with a water storage tank (135).

7. An adiabatic acceleration calorimeter return-flow preventing apparatus according to any one of claims 1 to 6, wherein: the rear parts of the upper box body (2) and the lower box body (1) are provided with heat dissipation fans (3).

8. An adiabatic acceleration calorimeter return-flow preventing apparatus according to any one of claims 1 to 6, wherein: the straight pipe (12) and the sample thermocouple (11) both penetrate through the interior of the upper furnace cover (5).