Pressure measuring device for asphalt heat exchanger

Abstract

The utility model discloses a pressure measuring device for an asphalt heat exchanger, which comprises an asphalt pressure measuring pipe, one end of the asphalt pressure measuring pipe is connected with an asphalt pipeline passing through an asphalt filter and an asphalt pump, and the other end of the asphalt pressure measuring pipe is connected with a spiral plate heat exchanger; the asphalt heating structure comprises a seamless tube arranged on the periphery of the asphalt pressure measuring tube in a sleeving manner, and the seamless tube is connected with the heat conduction oil to form a circulation path; and the pressure gauge is connected with the asphalt pressure measuring pipe and is used for detecting the pressure of the asphalt flowing through the asphalt pressure measuring pipe. According to the pressure measuring device for the asphalt heat exchanger, the asphalt pressure in the spiral plate heat exchanger can be monitored in real time through the pressure gauge installed on the asphalt pressure measuring pipe, and when the internal pressure of the spiral plate heat exchanger is too high and exceeds a limit value, the pressure gauge can give an alarm sound to remind field production personnel to shut down and maintain in time; therefore, the risks of leakage and explosion of the spiral-plate heat exchanger are avoided, the production safety is improved, and higher benefits are brought to users.

Description

Technical Field

[0001] The utility model relates to a pressure measuring device for an asphalt heat exchanger, belonging to the field of modified asphalt equipment. Background Art

[0002] Conventional modified asphalt equipment needs to heat the base asphalt below 170℃ to about 190℃-210℃ through a rapid heating device during the production of modified asphalt. The heat exchanger used in the modified asphalt equipment used to produce rubber asphalt is a spiral plate heat exchanger, which has the advantages of high efficiency and wide application range, but is not suitable for high-pressure occasions and is prone to leakage and explosion risks. Since the spiral plate heat exchanger is expensive, its failure must be avoided. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a pressure measuring device for an asphalt heat exchanger, which can monitor the internal pressure changes of the spiral plate heat exchanger in real time. When the internal pressure exceeds the limit, an alarm sound is issued to prompt on-site production personnel to perform maintenance and inspection.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts a pressure measuring device for an asphalt heat exchanger, comprising:

[0005] An asphalt pressure measuring tube, one end of which is connected to an asphalt pipeline passing through an asphalt filter and an asphalt pump, and the other end of which is connected to a spiral plate heat exchanger;

[0006] An asphalt heating structure, the asphalt heating structure comprising a seamless pipe sleeved on the outer circumference of the asphalt pressure measuring pipe, the seamless pipe being connected with the heat transfer oil to form a circulation passage;

[0007] A pressure gauge is connected to the asphalt pressure measuring tube and is used to detect the pressure of asphalt flowing through the asphalt pressure measuring tube.

[0008] As an improvement, both ends of the asphalt pressure measuring tube are connected to the asphalt pipeline and the spiral plate heat exchanger through connecting flanges respectively.

[0009] As an improvement, a connecting pipeline connected to the asphalt pressure measuring tube is welded on the asphalt pressure measuring tube, and the connecting pipeline is connected to the pressure gauge via a pressure gauge connecting flange.

[0010] As an improvement, the asphalt heating structure also includes an insulation layer sleeved on the outer circumference of the seamless pipe.

[0011] As an improvement, the thermal insulation layer adopts thermal insulation cotton.

[0012] As an improvement, a heat transfer oil connecting flange is installed on the seamless pipe, and the heat transfer oil connecting flange is connected to the heat transfer oil pipeline to form a heat transfer oil circulation passage.

[0013] As an improvement, the heat transfer oil connecting flange includes a heat transfer oil connecting flange 1 and a heat transfer oil connecting flange 2 respectively welded on the seamless pipe.

[0014] As an improvement, the pressure gauge is a full stainless steel high temperature flange type earthquake-resistant diaphragm electric contact pressure gauge.

[0015] Compared with the prior art, the pressure measuring device for asphalt heat exchanger of the utility model can monitor the asphalt pressure inside the spiral plate heat exchanger in real time through the pressure gauge installed on the asphalt pressure measuring tube. When the internal pressure of the spiral plate heat exchanger is too high and exceeds the limit, the pressure gauge will sound an alarm to remind on-site production personnel to shut down the machine for maintenance in time, thereby avoiding the risk of leakage and explosion of the spiral plate heat exchanger, improving production safety, and bringing higher benefits to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 The internal structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 3 The internal structure of the utility model is shown in FIG. Figure 2 ;

[0020] In the figure: 1. connecting flange 1, 2. seamless pipe, 3. thermal oil connecting flange 1, 4. thermal oil connecting flange 2, 5. connecting flange 2, 6. pressure gauge connecting flange, 7. pressure gauge, 8. insulation layer, 9. asphalt pressure measuring tube, 10. connecting pipeline. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clear, the technical solutions of the present application are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, a pressure measuring device for an asphalt heat exchanger comprises:

[0023] An asphalt pressure measuring tube 9, one end of which is connected to an asphalt pipeline passing through an asphalt filter and an asphalt pump, and the other end of which is connected to a spiral plate heat exchanger;

[0024] Asphalt heating structure, the asphalt heating structure includes a seamless pipe 2 sleeved on the outer periphery of the asphalt pressure measuring pipe 9, and the seamless pipe 2 is connected with the heat transfer oil to form a circulation path;

[0025] The pressure gauge 7 is connected to the asphalt pressure measuring tube 9 and is used to detect the pressure of asphalt flowing through the asphalt pressure measuring tube 9.

[0026] As an improvement of the embodiment, Figure 1 , Figure 2 and Figure 3 As shown, one end of the asphalt pressure measuring tube 9 is connected to the asphalt pipeline through a connecting flange 1, which is the asphalt inlet; the other end of the asphalt pressure measuring tube 9 is connected to the spiral plate heat exchanger through a connecting flange 2 5 to ensure that the base asphalt can enter the spiral plate heat exchanger for heating. At this time, the asphalt pressure in the asphalt pressure measuring tube 9 is consistent with the pressure of the bottom asphalt in the spiral heat exchanger.

[0027] As an improvement of the embodiment, Figure 1 , Figure 2 As shown, a connecting pipe 10 connected to the asphalt pressure measuring pipe 9 is welded on the asphalt pressure measuring pipe 9, and the connecting pipe 10 is connected to the pressure gauge 7 through the pressure gauge connecting flange 6. The asphalt pressure in the spiral plate heat exchanger can be monitored in real time through the pressure gauge 7. When the asphalt pressure in the spiral plate heat exchanger exceeds the specified limit, the pressure gauge 7 will sound an alarm to remind the on-site production personnel to check and repair. At the same time, the pressure gauge 7 is flange-connected, which is convenient for disassembly and assembly. Further preferably, the pressure gauge 7 is a full stainless steel high-temperature flange-type seismic-resistant diaphragm electric contact pressure gauge, which effectively meets the use requirements.

[0028] As an improvement of the embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the asphalt heating structure also includes an insulation layer 8 sleeved on the outer periphery of the seamless pipe 2. The insulation layer 8 uses insulation cotton to reduce heat loss.

[0029] As an improvement of the embodiment, Figure 1 , Figure 3As shown, a heat transfer oil connection flange is installed on the seamless pipe 2, and the heat transfer oil connection flange is connected with the heat transfer oil pipeline to form a heat transfer oil circulation passage. Specifically, the heat transfer oil connection flange includes a heat transfer oil connection flange 1 3 and a heat transfer oil connection flange 2 4 respectively welded on the seamless pipe 2. The utility model welds a seamless pipe 2 on the outer side of the asphalt pressure measuring pipe 9, and seal plates are welded at both ends of the seamless pipe 2 to form a sealed space. The heat transfer oil connection flange 1 3 and the heat transfer oil connection flange 2 4 are welded on the pipe body of the seamless pipe 2, so as to ensure that the heat transfer oil can be stored and flowed in the seamless pipe 2, thereby achieving the purpose of heating the asphalt.

[0030] When in use, the matrix asphalt flowing through the asphalt filter and the asphalt pump enters the connecting flange 1 and the asphalt pressure measuring tube 9 through the asphalt pipeline, and the matrix asphalt enters the pipeline of the connecting flange 2 5 through the asphalt pressure measuring tube 9, and then enters the spiral plate heat exchanger for heating, ensuring that the asphalt pressure in the asphalt pressure measuring tube 9 is consistent with the asphalt pressure in the spiral plate heat exchanger;

[0031] A small portion of the asphalt in the asphalt pressure measuring tube 9 enters the pipeline of the pressure gauge connecting flange 6, and then enters the pressure gauge 7. Since the asphalt pressure in the asphalt pressure measuring tube 9 is consistent with the asphalt pressure in the spiral plate heat exchanger at this time, the pressure gauge 7 can monitor the pressure change in the spiral plate heat exchanger in real time;

[0032] In addition, the seamless pipe 2 on the outside of the asphalt pressure measuring tube 9 and the heat transfer oil connecting flange 1 3 and the heat transfer oil connecting flange 2 4 welded on the seamless pipe body can realize the storage and flow of heat transfer oil, ensure that the matrix asphalt in the asphalt pressure measuring tube 9 is heated, and avoid asphalt agglomeration and blockage.

[0033] The pressure measuring device for asphalt heat exchanger of the utility model can monitor the asphalt pressure inside the spiral plate heat exchanger in real time through the pressure gauge installed on the asphalt pressure measuring tube. When the internal pressure of the spiral plate heat exchanger is too high and exceeds the limit, the pressure gauge will sound an alarm to remind on-site production personnel to shut down the machine for maintenance in time, thereby avoiding the risk of leakage and explosion of the spiral plate heat exchanger, improving production safety, and bringing higher benefits to users.

[0034] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.

Claims

1. A pressure measuring device for an asphalt heat exchanger, characterized in that: include: An asphalt pressure measuring tube (9), one end of which is connected to an asphalt pipeline passing through an asphalt filter and an asphalt pump, and the other end of which is connected to a spiral plate heat exchanger; An asphalt heating structure, the asphalt heating structure comprising a seamless pipe (2) sleeved on the outer periphery of an asphalt pressure measuring pipe (9), the seamless pipe (2) being connected to heat transfer oil to form a circulation path; A pressure gauge (7) is connected to the asphalt pressure measuring tube (9) and is used to detect the pressure of asphalt flowing through the asphalt pressure measuring tube (9).

2. A pressure measuring device for asphalt heat exchanger according to claim 1, characterized in that: Both ends of the asphalt pressure measuring tube (9) are connected to the asphalt pipeline and the spiral plate heat exchanger respectively through connecting flanges.

3. The pressure measuring device for asphalt heat exchanger according to claim 1, characterized in that: A connecting pipeline (10) in communication with the asphalt pressure measuring tube (9) is welded to the asphalt pressure measuring tube (9), and the connecting pipeline (10) is connected to the pressure gauge (7) via a pressure gauge connecting flange (6).

4. A pressure measuring device for asphalt heat exchanger according to claim 1, characterized in that: The asphalt heating structure also includes a heat-insulating layer (8) sleeved on the outer circumference of the seamless pipe (2).

5. A pressure measuring device for asphalt heat exchanger according to claim 4, characterized in that: The thermal insulation layer (8) is made of thermal insulation cotton.

6. The pressure measuring device for asphalt heat exchanger according to claim 1, characterized in that: A heat transfer oil connection flange is installed on the seamless pipe (2), and the heat transfer oil connection flange is connected to the heat transfer oil pipeline to form a heat transfer oil circulation passage.

7. A pressure measuring device for asphalt heat exchanger according to claim 6, characterized in that: The heat transfer oil connection flange comprises a heat transfer oil connection flange 1 (3) and a heat transfer oil connection flange 2 (4) which are respectively welded on the seamless pipe (2).

8. The pressure measuring device for asphalt heat exchanger according to claim 1, characterized in that: The pressure gauge (7) is a full stainless steel high temperature flange type shock-resistant diaphragm electric contact pressure gauge.

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