A high temperature plunger pump pressure sensor protection cover

Abstract

The utility model discloses a high temperature plunger pump pressure sensor protection cover belongs to plunger pump accessory technical field. This kind of high temperature plunger pump pressure sensor protection cover, high temperature pump protection cover includes base body, protection cover body and heat dissipation subassembly, high temperature pump base body is fixedly arranged on the outer wall of high temperature pump, and high temperature pump base body includes heat -proof base, and high temperature pump heat -proof base is ceramic fiber board material quality, high temperature pump protection cover body is arranged at the outside of base body, and the main part of high temperature pump pressure sensor is located in protection cover body, and high temperature pump protection cover body includes heat -proof cover, high temperature pump heat -proof cover includes the shell, intermediate layer and inner tube that set up by outside to inside in proper order, and high temperature pump shell is stainless steel material quality, and high temperature pump intermediate layer is aerogel heat -proof felt, and high temperature pump inner tube is high temperature resistant ceramic fiber material quality, and high temperature pump heat dissipation subassembly sets up on protection cover body, is used for the heat that possibly accumulated in protection cover body to outwardly radiate.

Description

Technical Field

[0001] This utility model relates to the technical field of plunger pump accessories, specifically a protective cover for a pressure sensor of a high-temperature plunger pump. Background Technology

[0002] A high-temperature plunger pump is a plunger pump capable of stable operation in high-temperature environments. The operating environment temperature or the temperature of the medium being transported is typically high, generally exceeding 100°C, although the specific threshold varies depending on the application. Key components such as the pump body and plunger are often made of high-temperature resistant materials, such as high-temperature alloys and stainless steel, to resist oxidation, corrosion, and strength reduction at high temperatures. High-temperature resistant seals, such as metal bellows seals and high-temperature graphite seals, are used to prevent leakage of high-temperature media. This type of pump is widely used in industries such as petrochemicals, metallurgy, and energy to transport high-temperature liquid media such as high-temperature oils and molten salts, achieving liquid pressurization and transportation functions under high-temperature conditions.

[0003] Chinese patent CN209943061U discloses a plunger pump and a hydraulic regulating system. The plunger pump includes a pump body and a pressure sensor. The plunger pump also has a detection channel, with its two ends leading to the discharge port of the pump body and the pressure sensor, respectively. The pressure sensor detects the fluid pressure at the discharge port through the detection channel. When liquid flows to the pressure sensor, the sensor senses the hydraulic pressure at that point and feeds this pressure data back to an external control device. The control device can adjust the operating speed of the control motor in real time based on the feedback data to maintain the hydraulic pressure in a desired and stable state. Therefore, this plunger pump can effectively maintain the hydraulic pressure in the hydraulic circuit. The hydraulic regulating system includes a control device and the aforementioned plunger pump; the pump body, pressure sensor, and control device constitute a closed-loop control system. Therefore, this hydraulic regulating system provides stable hydraulic control and accurate sample addition.

[0004] In practical use, the technical solution described in this paper involves directly installing the pressure sensor on the outside of the plunger pump's outlet pipe. The pressure sensor is directly exposed to the outside, and the surface temperature of the outlet pipe can reach 200-500℃ when the plunger pump is working. The exposed pressure sensor is directly subjected to high-temperature radiation and heat conduction. Its internal sensitive elements, such as strain gauges and capacitor films, will experience characteristic drift due to the temperature exceeding the tolerance threshold, resulting in increased measurement errors. In some cases, the lifespan of the components may be shortened due to aging, leading to a significant decrease in the reliability of the pressure sensor on high-temperature plunger pumps. This makes it impossible to meet the accuracy and stability requirements for pressure monitoring in industrial scenarios. Utility Model Content

[0005] The purpose of this invention is to provide a protective cover for a high-temperature plunger pump pressure sensor to solve the problems mentioned in the background art.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] A protective cover for a pressure sensor on a high-temperature plunger pump is disposed on the outer wall of the pump. A pressure sensor is mounted on the outer wall of the pump, and the sensing end of the pressure sensor extends into the pump. The protective cover comprises a base body, a protective cover body, and a heat dissipation assembly. The base body is fixedly disposed on the outer wall of the pump and includes a heat-insulating base made of ceramic fiberboard. The low thermal conductivity of the ceramic fiberboard blocks heat conduction from the pump to the protective cover. The protective cover body is disposed outside the base body, and the pressure sensor... The main body of the sensor is located inside the protective cover, which includes a heat insulation cover. The heat insulation cover includes an outer shell, a middle layer, and an inner cylinder arranged sequentially from the outside to the inside. The outer shell is made of stainless steel and is used to provide structural support and reduce the impact of the external environment on the internal heat insulation structure. The middle layer is an aerogel heat insulation felt, which blocks heat transfer through its extremely low thermal conductivity. The inner cylinder is made of high-temperature resistant ceramic fiber and is used to directly isolate the pressure sensor body from external heat. The heat dissipation component is disposed on the protective cover and is used to dissipate heat that may accumulate inside the protective cover to the outside.

[0008] Furthermore, the heat insulation cover and the heat insulation base are both fitted with connecting flanges on their opposite ends, a sealing gasket is provided between a pair of connecting flanges, and the pair of connecting flanges are connected by several bolts.

[0009] The advantages of adopting the above-mentioned further solution are that, since the pair of connecting flanges are fastened together by several bolts, the integrity of the heat insulation cover and the heat insulation base is ensured; since a sealing gasket is provided between the pair of connecting flanges, the sealing performance between the heat insulation cover and the heat insulation base is ensured, and the external heat generated by the high-temperature pump is prevented from entering through the connection gap between the heat insulation cover and the heat insulation base and affecting the operation of the pressure sensor.

[0010] Furthermore, the interior of the heat insulation base is provided with a detection perforation, and the sensing end of the pressure sensor extends to the outside through the detection perforation. The bottom surface of the heat insulation base is arc-shaped and matches the outer wall of the plunger pump outlet pipe.

[0011] The advantages of adopting the above-mentioned further solution are as follows: A detection perforation is opened inside the heat insulation base, allowing the detection end of the pressure sensor to extend through the perforation to the outside. This ensures that the pressure sensor can directly contact the medium inside the plunger pump's outlet pipe, achieving real-time and accurate pressure detection and avoiding signal lag caused by isolation between the detection end and the medium. The bottom surface of the heat insulation base is designed to be arc-shaped and matches the outer wall of the plunger pump's outlet pipe, increasing the contact area between the two and ensuring installation stability. Cable perforations are also provided on the heat insulation cover to facilitate the discharge of the pressure sensor cable through the cable perforations. Sealant is applied to the contact points between the cable perforations and the pressure sensor cable to prevent external hot air from entering the heat insulation cover through the gaps in the cable perforations and the pressure sensor cable.

[0012] Furthermore, a circular hole is provided inside the upper end of the heat insulation cover, and the circular hole is connected to the inner wall of the heat insulation cover.

[0013] The heat dissipation assembly includes an axial fan and a heat sink. The heat sink is installed inside the circular hole, and the outer wall of the heat sink is welded and fixed to the inner wall of the circular hole. A flow channel is provided at the center of the heat sink. An air inlet and an air outlet are respectively provided on both sides of the outer wall of the heat insulation cover. The axial fan is installed on the outer wall of the heat insulation cover at the air inlet. The air inlet, the flow channel, and the air outlet are connected.

[0014] The beneficial effects of adopting the above-mentioned further solution are that a circular hole is opened at the upper end of the heat insulation cover, and the air inlet, the flow channel of the heat sink, and the air outlet are set coaxially, which can form a straight airflow path, reduce wind resistance, and allow the air introduced by the axial fan to flow efficiently through the flow channel and quickly remove the heat absorbed by the heat sink; the heat sink is installed in the circular hole and welded to the hole wall to ensure a tight connection between the heat sink and the heat insulation cover, accelerate the transfer of heat from inside the heat insulation cover to the heat sink, and, together with the forced convection of the axial fan, can protect the pressure sensor inside the cover from heat dissipation.

[0015] Furthermore, the heat sink is made of anodized aluminum alloy or nickel-plated copper, and the air inlet end of the axial fan is threaded with an annular cover, one side of which is provided with a stainless steel filter.

[0016] The advantages of adopting the above-mentioned further solutions are that the heat sink is made of anodized aluminum alloy or nickel-plated copper. Anodized aluminum alloy has both good thermal conductivity and corrosion resistance, and is suitable for medium and high temperature environments of 200-300℃. Nickel-plated copper can quickly dissipate heat in environments of 300-400℃ to meet high heat dissipation requirements. The annular cover and stainless steel filter at the air inlet of the axial fan can effectively prevent external dust and oil from entering the axial fan and the heat insulation cover. At the same time, the annular cover is easy to disassemble and clean through threaded connection, ensuring smooth long-term ventilation.

[0017] Furthermore, the inner wall of the heat insulation cover is provided with an installation groove, and the outer wall of the heat insulation cover is provided with a first through hole and a second through hole.

[0018] The heat dissipation assembly also includes a cooling pipe, a first micro pump, and a second micro pump. The cooling pipe is spiral-shaped and installed inside the mounting groove. The inlet and outlet of the cooling pipe extend to the outside through the first and second through holes, respectively. The outlet of the first micro pump and the inlet of the second micro pump are connected to the inlet and outlet of the cooling pipe, respectively. The inlet of the first micro pump and the outlet of the second micro pump are connected to the outlet and inlet of the cooler, respectively, through external heat-insulating pipes.

[0019] The advantages of adopting the above-mentioned further solution are that the cooling pipe is installed in a spiral shape in the mounting groove on the inner wall of the heat insulation cover, which greatly increases the contact area with the air inside the heat insulation cover and improves the heat exchange efficiency; when the external temperature is no longer suitable for air cooling due to the high temperature of the plunger pump, the first and second micro pumps drive the coolant to circulate between the cooling pipe and the external cooler, and quickly remove the heat from the sensor and the heat insulation cover through water cooling, which is suitable for extreme environments where the pump body temperature exceeds 400°C; the inlet and outlet are connected to the cooler through external heat-insulated pipes, which can reduce the loss of coolant during the transmission process and ensure stable cooling efficiency.

[0020] Furthermore, both the first and second micro pumps are equipped with mounting bases on their outer walls, with one end of each mounting base being fixedly connected to the outer wall of the heat insulation cover.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the first micro pump and the second micro pump are fixedly connected to the outer wall of the heat insulation cover through the fixed base, so that the first micro pump and the second micro pump are installed stably.

[0022] Furthermore, both the inlet and outlet ends of the cooling pipe are provided with heat insulation layers, which are made of aluminum silicate fiber cotton.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the heat insulation layer of the water inlet and outlet of the cooling pipe is made of aluminum silicate fiber cotton, which has a temperature resistance of 600℃ and a low thermal conductivity. It can effectively block the influence of high external temperature on the coolant inside the pipe, avoid the coolant temperature from rising, and at the same time prevent the low temperature coolant from coming into contact with the high temperature environment to produce condensate, and prevent the condensate from corroding the heat insulation cover or sensor wiring terminals.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: The protective cover for the high-temperature plunger pump pressure sensor has a ceramic fiber inner cylinder with excellent high-temperature resistance, which can withstand the instantaneous high temperature generated during the operation of the high-temperature plunger pump and effectively block the direct transfer of heat to the pressure sensor; the aerogel insulation felt middle layer, the extremely low thermal conductivity of aerogel can further reduce the heat conduction efficiency, forming a highly efficient heat insulation barrier, reducing the impact of heat on the pressure sensor, and ensuring that the pressure sensor can still work stably in high-temperature environments; the stainless steel shell can not only resist possible external mechanical impacts, but also has good corrosion resistance, adapting to the complex working environment of the high-temperature plunger pump; the ceramic fiber board insulation base blocks the direct transfer of heat through a low thermal conductivity material; thus providing heat insulation protection for the pressure sensor. Attached Figure Description

[0025] Figure 1 A three-dimensional structural schematic diagram of a protective cover for a high-temperature plunger pump pressure sensor provided by this utility model;

[0026] Figure 2 A bottom-view exploded three-dimensional structural diagram of the base body and the protective cover body of a high-temperature plunger pump pressure sensor protective cover provided by this utility model.

[0027] Figure 3 An exploded three-dimensional structural diagram of the heat dissipation assembly and the protective cover body of a high-temperature plunger pump pressure sensor protective cover provided by this utility model.

[0028] Figure 4 A three-dimensional structural diagram of the cooling pipe of a high-temperature plunger pump pressure sensor protective cover provided by this utility model;

[0029] Figure 5 A partial front cross-sectional view of the heat insulation cover of a high-temperature plunger pump pressure sensor protective cover provided by this utility model.

[0030] In the diagram: 1. Base body; 11. Insulated base; 12. Inspection perforation; 2. Protective cover body; 21. Insulated cover; 2101. Outer shell; 2102. Inner cylinder; 2103. Intermediate layer; 22. Mounting groove; 23. First through hole; 24. Second through hole; 25. Round hole; 26. Air inlet; 27. Air outlet; 3. Heat dissipation assembly; 31. Axial flow fan; 32. Heat sink; 33. Flow channel; 34. Cooling pipe; 35. Fixing base; 36. First micro pump; 37. Second micro pump. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-5 This utility model provides a technical solution: a protective cover for a pressure sensor of a high-temperature plunger pump, which is disposed on the outer wall of the high-temperature pump. A pressure sensor is disposed on the outer wall of the high-temperature pump, and the sensing end of the pressure sensor extends into the high-temperature pump. The protective cover comprises a base body 1, a protective cover body 2, and a heat dissipation assembly 3. The base body 1 is fixedly disposed on the outer wall of the high-temperature pump and includes a heat-insulating base 11 made of ceramic fiberboard. The low thermal conductivity of the ceramic fiberboard blocks heat conduction from the high-temperature pump to the protective cover. The protective cover body 2 is disposed on the base body. The pressure sensor body is located inside the protective cover body 2, which includes a heat insulation cover 21. The heat insulation cover 21 includes an outer shell 2101, an intermediate layer 2103, and an inner cylinder 2102 arranged sequentially from the outside to the inside. The outer shell 2101 is made of stainless steel and is used to provide structural support and reduce the impact of the external environment on the internal heat insulation structure. The intermediate layer 2103 is an aerogel heat insulation felt, which blocks heat transfer through its extremely low thermal conductivity. The inner cylinder 2102 is made of high-temperature resistant ceramic fiber and is used to directly isolate the pressure sensor body from external heat. The heat dissipation component 3 is disposed on the outside of the pressure sensor body. On the protective cover body 2, heat dissipation is provided to dissipate any heat that may accumulate inside the protective cover body 2. Connecting flanges are fitted on the exterior of opposite ends of the heat insulation cover 21 and the heat insulation base 11. A sealing gasket is provided between a pair of connecting flanges, and the pair of connecting flanges are connected by several bolts. A detection perforation 12 is provided inside the heat insulation base 11, through which the sensing end of the pressure sensor extends to the outside. The bottom surface of the heat insulation base 11 is arc-shaped and matches the outer wall of the plunger pump outlet pipe. The heat insulation base 11, made of ceramic fiberboard, is fitted with a stainless steel outer... The heat insulation cover 21, composed of shell 2101, aerogel insulation felt intermediate layer 2103, and ceramic fiber inner cylinder 2102, is connected by connecting flanges to form a double heat insulation barrier. The pair of connecting flanges are fastened with bolts and fitted with sealing gaskets. The sealing gaskets are high-temperature resistant graphite gaskets, which can effectively block external high-temperature airflow, dust, and oil from entering the interior of the protective cover, and prevent impurities from adhering to the surface of the pressure sensor and affecting the measurement accuracy. At the same time, the rigid structure of the flange connection can resist the vibration of the plunger pump during operation, prevent the relative displacement between the base and the cover due to vibration, and ensure the structural stability during long-term use.

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figures 1-5 This utility model provides a technical solution: a circular hole 25 is provided inside the upper end of the heat insulation cover 21, and the circular hole 25 is connected to the inner wall of the heat insulation cover 21; the heat dissipation assembly 3 includes an axial fan 31 and a heat sink 32, the heat sink 32 is installed inside the circular hole 25, and the outer wall of the heat sink 32 is welded and fixed to the inner wall of the circular hole 25. A flow channel 33 is provided at the center of the heat sink 32. An air inlet 26 and an air outlet 27 are respectively provided on both sides of the outer wall of the heat insulation cover 21. The axial fan 31 is installed on the outer wall of the heat insulation cover 21 located at the air inlet 26. The air inlet 26, the flow channel 33 and the air outlet 27 are connected. The heat sink 32 is made of anodized aluminum alloy or nickel-plated copper. The air inlet of the axial fan 31 is threaded with an annular cover. One side of the annular cover is equipped with a stainless steel filter. When the user uses a thermometer or other equipment to detect that the pump body temperature is below 400℃, the heat inside the heat insulation cover 21 is transferred to the heat sink 32. With the forced convection of the axial fan 31, the air inlet 26, the flow channel 33 of the heat sink 32, and the air outlet 27 are set coaxially to form a straight airflow path, reducing wind resistance and allowing the air introduced by the axial fan 31 to flow efficiently through the flow channel 33 and quickly remove the heat absorbed by the heat sink 32.

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figures 1-5This utility model provides a technical solution: the inner wall of the heat insulation cover 21 is provided with an installation groove 22, and the outer wall of the heat insulation cover 21 is provided with a first through hole 23 and a second through hole 24; the heat dissipation assembly 3 also includes a cooling pipe 34, a first micro pump 36 and a second micro pump 37. The cooling pipe 34 is spiral-shaped and installed inside the installation groove 22. The inlet and outlet ends of the cooling pipe 34 extend to the outside through the first through hole 23 and the second through hole 24, respectively. The outlet end of the first micro pump 36 and the inlet end of the second micro pump 37 are respectively connected to the inlet and outlet ends of the cooling pipe 34. The inlet end of the first micro pump 36 and the outlet end of the second micro pump 37 are respectively connected to the outlet end and inlet end of the cooler through external heat insulation pipes. The first micro pump 36 and the second micro pump 37 are respectively connected to the outlet end and inlet end of the cooler. The outer wall of the 37 is equipped with a fixing seat 35. One end of the fixing seat 35 is fixedly connected to the outer wall of the heat insulation cover 21. The outer side of the water inlet end and the outer side of the water outlet end of the cooling pipe 34 are provided with a heat insulation layer. The heat insulation layer is made of aluminum silicate fiber cotton. When the temperature of the detection body is equal to or higher than 400℃, the first micro pump 36 and the second micro pump 37 drive the coolant to circulate between the cooling pipe 34 and the external cooler. The heat is quickly removed from the sensor and the heat insulation cover 21 by water cooling. The cooling pipe 34 is installed in a spiral shape in the mounting groove 22 on the inner wall of the heat insulation cover 21, which greatly increases the contact area with the air inside the heat insulation cover 21 and improves the heat exchange efficiency.

[0037] Specifically, the working principle of this high-temperature plunger pump pressure sensor protective cover is as follows: First, the heat insulation base 11 is welded to the plunger pump's outlet pipe. The detection perforation 12 must be aligned with the pressure detection hole pre-drilled on the outlet pipe. Then, the pressure sensor is fixed to the heat insulation base 11 with sealant. Next, the connecting flange at one end of the heat insulation cover 21 is aligned with the connecting flange at one end of the heat insulation base 11, and the anti-loosening bolts are tightened sequentially. A pair of connecting flanges are secured with bolts, and a sealing gasket (a high-temperature resistant graphite gasket) is used to effectively block external high-temperature airflow, dust, and oil from entering. Inside the protective cover; the ceramic fiber inner cylinder 2102 has excellent high-temperature resistance, capable of withstanding the instantaneous high temperatures generated during the operation of the high-temperature plunger pump, effectively preventing heat from being directly transferred to the pressure sensor; the aerogel insulation felt middle layer 2103, the extremely low thermal conductivity of aerogel further reduces heat conduction efficiency, forming a highly efficient heat insulation barrier, reducing the impact of heat on the pressure sensor, and ensuring that the pressure sensor can still work stably in high-temperature environments; the stainless steel outer shell 2101 not only resists possible external mechanical impacts, but also has good corrosion resistance, adapting to the complex environment of the high-temperature plunger pump. In complex working environments, the ceramic fiberboard insulation base 11 blocks direct heat transfer through a low thermal conductivity material; it also provides thermal insulation protection for the pressure sensor; when the user detects that the pump body temperature is below 400℃ using a thermometer or other equipment, the heat inside the insulation cover 21 is transferred to the heat sink 32. Combined with the forced convection of the axial fan 31, the air inlet 26, the flow channel 33 of the heat sink 32, and the air outlet 27 are coaxially aligned, forming a straight airflow path, reducing wind resistance, and allowing the air introduced by the axial fan 31 to flow efficiently through the flow channel 33, quickly carrying away the heat absorbed by the heat sink 32. Heat; when the temperature of the sensor body is equal to or higher than 400℃, the first micro pump 36 and the second micro pump 37 drive the coolant to circulate between the cooling pipe 34 and the external cooler, quickly removing the heat from the sensor and the heat shield 21 through water cooling. The cooling pipe 34 is spirally installed in the mounting groove 22 on the inner wall of the heat shield 21, which greatly increases the contact area with the air inside the heat shield 21 and improves the heat exchange efficiency.

[0038] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. Furthermore, since this application is mainly used to protect mechanical devices, the control methods and circuit connections will not be explained in detail in this application.

Claims

1. A high-temperature plunger pump pressure sensor protection cover, which is arranged on the outer wall of a high-temperature pump, wherein the outer wall of the high-temperature pump is provided with a pressure sensor, and a sensing end of the pressure sensor extends into the high-temperature pump, characterized in that, The protective cover includes a base body (1), a protective cover body (2), and a heat dissipation assembly (3); the base body (1) is fixedly mounted on the outer wall of the high-temperature pump, and the base body (1) includes a heat-insulating base (11), which is made of ceramic fiber board material. The low thermal conductivity of the ceramic fiber board blocks the heat conduction from the high-temperature pump to the protective cover; the protective cover body (2) is located outside the base body (1), and the main body of the pressure sensor is located inside the protective cover body (2). The protective cover body (2) includes a heat insulation cover (21); the heat insulation cover (21) includes a heat insulation cover made of... The outer shell (2101), the intermediate layer (2103), and the inner cylinder (2102) are arranged sequentially from the outside to the inside. The outer shell (2101) is made of stainless steel and is used to provide structural support and reduce the impact of the external environment on the internal heat insulation structure. The intermediate layer (2103) is made of aerogel heat insulation felt, which blocks heat transfer through its extremely low thermal conductivity. The inner cylinder (2102) is made of high-temperature resistant ceramic fiber and is used to directly isolate the pressure sensor body from external heat. The heat dissipation component (3) is set on the protective cover body (2) and is used to dissipate the heat that may accumulate inside the protective cover body (2) to the outside.

2. A high temperature plunger pump pressure sensor boot according to claim 1, wherein, The heat insulation cover (21) and the heat insulation base (11) are both fitted with connecting flanges on their opposite ends. A sealing gasket is provided between the pair of connecting flanges, and the pair of connecting flanges are connected by several bolts.

3. A high temperature plunger pump pressure sensor boot according to claim 1, wherein, The heat insulation base (11) has a detection perforation (12) inside. The sensing end of the pressure sensor extends to the outside through the detection perforation (12). The bottom surface of the heat insulation base (11) is arc-shaped and matches the outer wall of the plunger pump outlet pipe.

4. A high temperature plunger pump pressure sensor boot according to claim 1, wherein, The upper end of the heat insulation cover (21) is provided with a circular hole (25), which is connected to the inner wall of the heat insulation cover (21). The heat dissipation assembly (3) includes an axial fan (31) and a heat sink (32). The heat sink (32) is installed inside the circular hole (25), and the outer wall of the heat sink (32) is welded and fixed to the inner wall of the circular hole (25). A flow channel (33) is provided at the center of the heat sink (32). An air inlet (26) and an air outlet (27) are respectively provided on both sides of the outer wall of the heat insulation cover (21). The axial fan (31) is installed on the outer wall of the heat insulation cover (21) at the air inlet (26). The air inlet (26), the flow channel (33) and the air outlet (27) are connected.

5. A high temperature plunger pump pressure sensor boot according to claim 4, wherein, The heat sink (32) is made of anodized aluminum alloy or nickel-plated copper. The air inlet of the axial fan (31) is threaded with an annular cover, and one side of the annular cover is provided with a stainless steel filter.

6. A high temperature plunger pump pressure sensor boot according to claim 3, wherein, The inner wall of the heat insulation cover (21) is provided with an installation groove (22), and the outer wall of the heat insulation cover (21) is provided with a first through hole (23) and a second through hole (24). The heat dissipation assembly (3) also includes a cooling pipe (34), a first micro pump (36), and a second micro pump (37). The cooling pipe (34) is spiral-shaped and is installed inside the mounting groove (22). The inlet and outlet of the cooling pipe (34) extend to the outside through the first through hole (23) and the second through hole (24), respectively. The outlet of the first micro pump (36) and the inlet of the second micro pump (37) are connected to the inlet and outlet of the cooling pipe (34), respectively. The inlet of the first micro pump (36) and the outlet of the second micro pump (37) are connected to the outlet and inlet of the cooler, respectively, through an external heat-insulating pipe.

7. A high temperature plunger pump pressure sensor boot according to claim 6, wherein, The outer walls of the first micro pump (36) and the second micro pump (37) are both equipped with a fixing seat (35), one end of which is fixedly connected to the outer wall of the heat insulation cover (21).

8. A high temperature plunger pump pressure sensor boot according to claim 6, wherein, The cooling pipe (34) has a heat insulation layer on the outside of both the water inlet and the water outlet, and the heat insulation layer is made of aluminum silicate fiber cotton.

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