Steam heat tracing instrument heat preservation box suitable for alpine region

Abstract

The utility model relates to the technical field of instrument measurement heat preservation and heat insulation, in particular to a steam heat tracing instrument heat preservation box suitable for an alpine region, which comprises a box body, a first pressure guide pipe and a second pressure guide pipe, and the first pressure guide pipe and the second pressure guide pipe which are spaced left and right and penetrate through the box body up and down are arranged on the rear portion of the box body. The upper inlet end and the lower outlet end of the first pressure guiding pipe and the upper inlet end and the lower outlet end of the second pressure guiding pipe are arranged on the outer side of the box body respectively. The heat preservation box is reasonable and compact in structure and convenient to use, heat preservation can be conducted on an instrument three-valve set and a pressure transmitter on an equipment pipeline in an alpine region, the steam tracing pipe is arranged in the box body, the U-shaped pipe section is arranged on the steam tracing pipe, the instrument three-valve set is surrounded by the U-shaped pipe section, heat preservation is conducted on the instrument three-valve set, and heat preservation is conducted on the instrument three-valve set. The internal temperature of the box body can be raised to 15-20 DEG C, and the problem that normal production is affected by measurement distortion caused by freezing and blocking of instruments in alpine regions is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat preservation and insulation of instrument measurement, and is a steam-heating instrument insulation box suitable for high-cold areas. Background Art

[0002] At chemical enterprises in high-cold areas, it is very important to prevent instruments from freezing in winter. Any negligence will cause freezing of instrument measurement pipelines, measurement distortion, interlocking action and other serious accidents. At the same time, in industrial applications such as electricity, chemical industry, metallurgy, and petroleum, there are also harsh environmental factors such as high temperature, low temperature, and dust, which will damage the instruments and affect their normal use. Among them, the temperature factor is more difficult to control than other factors, because many instruments are installed outdoors and are seriously affected by the natural environment. They will be exposed to high temperatures and sun in the summer and severe cold and snow in the winter. Some instruments need to be installed close to production equipment that emits high heat or low temperatures, and are also easily affected by these equipment and damaged.

[0003] At present, the existing steam instrument heating insulation boxes available on the market are suitable for low-cold areas. In high-cold areas, due to insufficient radiation heat and other reasons, some measuring instruments using media that are prone to condensation, crystallization and freezing are very likely to have measurement distortion when using this insulation box.

[0004] When the instrument and / or the instrument pipeline in the instrument insulation box is damaged and needs to be taken out for repair, it is often necessary to destroy the instrument insulation box before the instrument and its pipeline can be taken out intact for repair. The damaged instrument insulation box cannot be reused and can only be discarded and recycled, causing serious waste and increasing maintenance costs.

[0005] At present, pressure transmitters are widely used in industrial production processes, mainly used to measure parameters such as flow and pressure. When measuring pressure, the pressure transmitter uses a single pressure pipe. When measuring flow, two pressure pipes are used. The pressure transmitter is connected to the equipment or pipeline through the pressure pipe. The measuring medium in the equipment and pipeline enters the transmitter pressure joint through the pressure pipe. The pressure acts on the transmitter diaphragm and then converts the pressure signal into an electrical signal to measure the pressure. Once the measuring medium in the pressure pipe is crystallized, frozen, vaporized, etc., it will have a great impact on the measurement result. Summary of the invention

[0006] The utility model provides a steam-heating instrument insulation box suitable for high-cold areas, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problem of measurement distortion existing in instruments on existing pipeline equipment in high-cold areas.

[0007] The technical solution of the utility model is achieved through the following measures: a steam-heated instrument insulation box suitable for high-cold areas, including a box body, an instrument three-valve group and a pressure transmitter, a first pressure-leading pipe and a second pressure-leading pipe are arranged at the rear of the box body, which are separated by left and right intervals and penetrate the box body from top to bottom, and the upper inlet end and the lower outlet end of the first pressure-leading pipe and the upper inlet end and the lower outlet end of the second pressure-leading pipe are arranged outside the box body respectively, an instrument three-valve group and a pressure transmitter are fixedly installed in the box body, and the left and right sides of the instrument three-valve group are respectively fixedly installed There are high-pressure stop valve and low-pressure stop valve, a balancing valve is fixedly installed at the bottom of the three-valve group, a first pressure-leading interface and a second pressure-leading interface are opened on the front side of the instrument three-valve group, a transmitter interface is opened on the rear side of the instrument three-valve group, a first pressure-leading branch pipe is fixedly installed between the first pressure-leading interface of the instrument three-valve group and the first pressure-leading pipe, a second pressure-leading branch pipe is fixedly installed between the second pressure-leading interface of the instrument three-valve group and the second pressure-leading pipe, the instrument three-valve group is connected to the pressure transmitter through the transmitter interface, and heating pipes that run through the box body are arranged on the top and bottom.

[0008] The following are further optimizations and / or improvements to the above utility model technical solution:

[0009] The rear side of the above-mentioned box body is provided with a heating pipe which runs through the box body from top to bottom. The heating pipe includes a first pipe section, a serpentine pipe section, a U-shaped pipe section and a second pipe section which are connected end to end. The upper side of the box body is provided with the first pipe section and the serpentine pipe section, the inlet end of the first pipe section is located outside the box body, and the outlet end of the first pipe section is connected with the inlet end of the serpentine pipe section. The lower side of the box body is provided with a U-shaped pipe section and a second pipe section, the front part of the U-shaped pipe section is located in front of the three-valve group of the instrument, the U-shaped pipe section is in a U-shape with an opening facing backwards, the outlet end of the serpentine pipe section is connected with the inlet end of the U-shaped pipe section, and the outlet end of the second pipe section is located outside the box body. The first pipe section, the serpentine pipe section and the second pipe section of the heating pipe are located behind the first pressure-leading pipe and the second pressure-leading pipe.

[0010] A fixing frame is arranged on the inner side of the lower part of the box body, and the instrument three-valve group is fixed in the box body through the fixing frame.

[0011] The top and bottom of the box body are both provided with through-plate joints, and the inlet end of the first pipe section and the outlet end of the second pipe section are fixed on the box body through the through-plate joints.

[0012] A temperature detector is fixedly installed on the outside of the box, a flow regulator and a flow control valve are fixedly installed on the U-shaped pipe section in the heating pipe, and the flow control valve is interlocked with the flow regulator and the temperature detector respectively.

[0013] The box body comprises an outer insulation layer and an inner insulation layer. The outer insulation layer is arranged outside the box body, and the inner insulation layer is arranged inside the box body. The outer insulation layer is an asbestos cement shell made of a mixture of asbestos fiber and cement, and the inner insulation layer is a composite silicate felt.

[0014] A cooler is fixedly installed on the first pressure-introducing pipe on the upper side of the first pressure-introducing branch pipe, and a cooler is fixedly installed on the second pressure-introducing pipe on the upper side of the second pressure-introducing branch pipe.

[0015] The first pressure-inducing pipe and the second pressure-inducing pipe on the outer side of the lower part of the box body are both fixedly installed with sewage valves.

[0016] A cabinet door is arranged on the front side of the box body, and a door lock is fixedly installed on the cabinet door.

[0017] The utility model has a reasonable and compact structure and is easy to use. It is applied in high-cold areas to insulate the three-valve group of instruments and pressure transmitters on the equipment pipelines in the high-cold areas. A steam heating pipe is arranged inside the box body. The steam heating pipe is provided with a U-shaped pipe section. The U-shaped pipe section surrounds the three-valve group of instruments to insulate the three-valve group of instruments, so that the temperature inside the box body can be raised to 15°C to 20°C, which effectively solves the problem of preventing freezing of instruments in high-cold areas, causing measurement distortion and affecting normal production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 This is a schematic diagram of the main perspective structure of the best embodiment of the utility model.

[0019] Attached Figure 2 For attachment Figure 1 Schematic diagram of the left view structure in .

[0020] The codes in the accompanying drawings are: 1 is a box body, 2 is a first pressure-leading pipe, 3 is a second pressure-leading pipe, 4 is an instrument three-valve group, 5 is a pressure transmitter, 6 is a high-pressure stop valve, 7 is a low-pressure stop valve, 8 is a balancing valve, 9 is a first pressure-leading interface, 10 is a second pressure-leading interface, 11 is a first pressure-leading branch pipe, 12 is a second pressure-leading branch pipe, 13 is a first pipe section, 14 is a serpentine pipe section, 15 is a U-shaped pipe section, 16 is a second pipe section, 17 is a fixing bracket, 18 is a temperature detector, 19 is a cabinet door, and 20 is a door lock. DETAILED DESCRIPTION

[0021] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0022] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 It is determined by the layout direction.

[0023] The present invention is further described below in conjunction with the embodiments and drawings:

[0024] As attached Figure 1 ,2 As shown, the steam-tracing instrument insulation box suitable for high-cold areas includes a box body 1, an instrument three-valve group 4 and a pressure transmitter 5. The rear part of the box body 1 is provided with a first pressure-leading pipe 2 and a second pressure-leading pipe 3 which are spaced on the left and right and penetrate the box body 1 from top to bottom. The upper inlet end and the lower outlet end of the first pressure-leading pipe 2 and the upper inlet end and the lower outlet end of the second pressure-leading pipe 3 are arranged on the outside of the box body 1 respectively. The instrument three-valve group 4 and the pressure transmitter 5 are fixedly installed in the box body 1. The high-pressure stop valve 6 and the low-pressure stop valve 7 are fixedly installed on the left and right sides of the instrument three-valve group 4 respectively. A balancing valve 8 is fixedly installed at the bottom of the three-valve group 4, a first pressure-leading interface 9 and a second pressure-leading interface 10 are provided on the front side of the instrument three-valve group 4, a transmitter interface is provided on the rear side of the instrument three-valve group 4, a first pressure-leading branch pipe 11 is fixedly installed between the first pressure-leading interface 9 of the instrument three-valve group 4 and the first pressure-leading pipe 2, a second pressure-leading branch pipe 12 is fixedly installed between the second pressure-leading interface 10 of the instrument three-valve group 4 and the second pressure-leading pipe 3, the instrument three-valve group 4 is connected to the pressure transmitter 5 via the transmitter interface, and a heating pipe is provided inside the box body 1 which runs through the box body 1 from top to bottom.

[0025] The utility model is applied in high-cold areas to insulate the three-valve group 4 and the pressure transmitter 5 of the instrument on the equipment pipeline in the high-cold areas. The three-valve group 4 of the instrument is heated and insulated by arranging a heating pipe for passing steam inside the box body 1, so that the temperature inside the box body 1 can be raised to 15°C to 20°C, which effectively solves the problem of preventing the freezing of instruments in high-cold areas and causing measurement distortion to affect normal production.

[0026] The above steam-heated instrument insulation box suitable for high-cold areas can be further optimized and / or improved according to actual needs:

[0027] As attached Figure 1 , 2As shown, a heating pipe which passes through the box body 1 from top to bottom is provided on the rear side of the interior of the box body 1, and the heating pipe comprises a first pipe section 13, a serpentine pipe section 14, a U-shaped pipe section 15 and a second pipe section 16. The first pipe section 13 and the serpentine pipe section 14 are provided on the upper side of the box body 1, the inlet end of the first pipe section 13 is located outside the box body 1, and the outlet end of the first pipe section 13 is communicated with the inlet end of the serpentine pipe section 14, and the U-shaped pipe section 15 and the second pipe section 16 are provided on the lower side of the box body 1, the front part of the U-shaped pipe section 15 is located in front of the instrument three-valve group 4, the U-shaped pipe section 15 is in a U-shape with an opening facing backwards, the outlet end of the serpentine pipe section 14 is communicated with the inlet end of the U-shaped pipe section 15, and the outlet end of the second pipe section 16 is located outside the box body 1, and the first pipe section 13, the serpentine pipe section 14 and the second pipe section 16 of the heating pipe are located behind the first pressure-leading pipe 2 and the second pressure-leading pipe 3. During use, the serpentine pipe section 14 in the heating pipe has a better insulation effect, and the U-shaped pipe section 15 in the heating pipe surrounds the instrument three-valve group 4 to insulate the instrument three-valve group 4, so that the internal temperature of the box body 1 can be raised to 15°C to 20°C, which can better ensure the temperature inside the box body 1.

[0028] As attached Figure 1 , 2 As shown, a fixing frame 17 is provided on the inner side of the lower part of the box body 1 , and the instrument three-valve group 4 is fixed in the box body 1 through the fixing frame 17 .

[0029] As required, through-plate joints are provided on the top and bottom of the box body 1 , and the inlet end of the first pipe section 13 and the outlet end of the second pipe section 16 are fixed to the box body 1 through the through-plate joints.

[0030] As attached Figure 1 As shown, a temperature detector 18 is fixedly installed on the outside of the box 1, and a flow regulator and a flow control valve are fixedly installed on the U-shaped pipe section 15 in the heat tracing pipe. The flow control valve is interlocked with the flow regulator and the temperature detector. During use, the temperature inside the box 1 is detected by the temperature detector 18. When the temperature does not reach or exceeds the set temperature, the opening of the flow control valve is interlocked, thereby controlling the flow of steam in the heat tracing pipe to effectively control the temperature inside the box 1.

[0031] According to the needs, the box body 1 includes an outer insulation layer and an inner insulation layer. The outer insulation layer is provided on the outer side of the box body 1, and the inner insulation layer is provided on the inner side of the box body 1. The outer insulation layer is an asbestos cement shell made of a mixture of asbestos fiber and cement, and the inner insulation layer is a composite silicate felt. In the actual process, when the heating is insufficient, the outer insulation layer and the inner insulation layer of the box body 1 can be used for insulation.

[0032] As required, a cooler is fixedly installed on the first pressure-introducing pipe 2 on the upper side of the first pressure-introducing branch pipe 11, and a cooler is fixedly installed on the second pressure-introducing pipe 3 on the upper side of the second pressure-introducing branch pipe 12. During use, when the medium to be measured is a high-temperature medium, the medium to be measured is sent to the coolers on the first pressure-introducing pipe 2 and the second pressure-introducing pipe 3 for cooling, and the cooled high-temperature medium is sent to the pressure transmitter 5 for monitoring.

[0033] As required, a drain valve is fixedly installed on the first pressure-inducing pipe 2 and the second pressure-inducing pipe 3 at the lower outer side of the box 1. During use, the measured waste liquid or waste gas is sent to the lower side of the first pressure-inducing pipe 2 and / or the second pressure-inducing pipe 3 by the drain valve.

[0034] As required, a cabinet door 19 is provided at the front side of the cabinet body 1 , and a door lock 20 is fixedly mounted on the cabinet door 19 .

[0035] The above technical features constitute the best implementation example of the present utility model, which has strong adaptability and best implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the requirements of different situations.

[0036] The use process of the best embodiment of the utility model:

[0037] When measuring pressure, the medium to be measured is sent from the pipeline or equipment of the medium to be measured through the first pressure-leading pipe 2 and the first pressure-leading branch pipe 11 to the instrument three-valve group 4, and then sent to the pressure transmitter 5 by the instrument three-valve group 4, and the pressure of the medium to be measured is measured by the pressure transmitter 5.

[0038] When measuring flow, the medium to be measured sent from the high-pressure side of the pipeline or equipment of the medium to be measured is sent to the instrument three-valve group 4 through the first pressure-leading pipe 2 and the first pressure-leading branch pipe 11, and the medium to be measured sent from the low-pressure side of the pipeline or equipment of the medium to be measured is sent to the instrument three-valve group 4 through the second pressure-leading pipe 3 and the second pressure-leading branch pipe 12. First, open the high-pressure stop valve 6 to send the medium to be measured on the high-pressure side to the pressure transmitter 5, then close the balancing valve 8, and still keep the medium to be measured on the high-pressure side to be sent to the pressure transmitter 5. Finally, open the low-pressure stop valve 7. At this time, the pressures on the high-pressure side and the low-pressure side are sent to the pressure transmitter 5 by the transmitter connector, and the flow of the pipeline or equipment is measured through the pressure transmitter 5.

[0039] The steam generated by the boiler is sent to the heating pipe, through which the instrument three-valve group 4 and the pressure transmitter 5 are kept warm, and the temperature inside the box 1 is monitored by the temperature detector 18.

Claims

1. A steam-heated instrument insulation box suitable for high-cold areas, characterized in that It includes a box body, an instrument three-valve group and a pressure transmitter. The rear part of the box body is provided with a first pressure-leading pipe and a second pressure-leading pipe which are spaced on the left and right and pass through the box body from top to bottom. The upper inlet end and the lower outlet end of the first pressure-leading pipe and the upper inlet end and the lower outlet end of the second pressure-leading pipe are arranged on the outside of the box body respectively. The instrument three-valve group and the pressure transmitter are fixedly installed in the box body. The high-pressure stop valve and the low-pressure stop valve are fixedly installed on the left and right sides of the instrument three-valve group respectively. A balancing valve is fixedly installed at the bottom of the three-valve group. The front side of the instrument three-valve group is provided with a first pressure-leading interface and a second pressure-leading interface. The rear side of the instrument three-valve group is provided with a transmitter interface. A first pressure-leading branch pipe is fixedly installed between the first pressure-leading interface of the instrument three-valve group and the first pressure-leading pipe, a second pressure-leading branch pipe is fixedly installed between the second pressure-leading interface of the instrument three-valve group and the second pressure-leading pipe, the instrument three-valve group and the pressure transmitter are connected through the transmitter interface, and a heating pipe which passes through the box body from top to bottom is provided inside the box body.

2. The steam-heated instrument insulation box suitable for high-cold areas according to claim 1 is characterized in that A heating pipe which passes through the box body from top to bottom is provided on the rear side of the interior of the box body. The heating pipe includes a first pipe section, a serpentine pipe section, a U-shaped pipe section and a second pipe section which are connected end to end. The first pipe section and the serpentine pipe section are provided on the upper side of the box body. The inlet end of the first pipe section is located outside the box body, and the outlet end of the first pipe section is connected to the inlet end of the serpentine pipe section. The U-shaped pipe section and the second pipe section are provided on the lower side of the box body. The front part of the U-shaped pipe section is located in front of the three-valve group of the instrument. The U-shaped pipe section is in a U-shape with an opening facing backwards. The outlet end of the serpentine pipe section is connected to the inlet end of the U-shaped pipe section. The outlet end of the second pipe section is located outside the box body. The first pipe section, the serpentine pipe section and the second pipe section of the heating pipe are located behind the first pressure-leading pipe and the second pressure-leading pipe.

3. The steam-heated instrument insulation box suitable for high-cold areas according to claim 1 or 2, characterized in that A fixing frame is provided on the inner side of the lower part of the box body, and the instrument three-valve group is fixed in the box body through the fixing frame; or / and, a through-plate joint is provided on the top and bottom of the box body, and the inlet end of the first pipe section and the outlet end of the second pipe section are fixed to the box body through the through-plate joint.

4. The steam-heated instrument insulation box suitable for high-cold areas according to claim 1 or 2, characterized in that A temperature detector is fixedly installed on the outside of the box body, a flow regulator and a flow control valve are fixedly installed on the U-shaped pipe section in the heating pipe, and the flow control valve is interlocked with the flow regulator and the temperature detector respectively.

5. The steam-heated instrument insulation box suitable for high-cold areas according to claim 3 is characterized in that A temperature detector is fixedly installed on the outside of the box body, a flow regulator and a flow control valve are fixedly installed on the U-shaped pipe section in the heating pipe, and the flow control valve is interlocked with the flow regulator and the temperature detector respectively.

6. The steam-heated instrument insulation box suitable for high-cold areas according to claim 1, 2 or 5, characterized in that The box body includes an outer insulation layer and an inner insulation layer. The outer insulation layer is arranged on the outer side of the box body, and the inner insulation layer is arranged on the inner side of the box body. The outer insulation layer is an asbestos cement shell made of a mixture of asbestos fiber and cement, and the inner insulation layer is a composite silicate felt. A cooler is fixedly installed on the first pressure-leading pipe on the upper side of the first pressure-leading branch pipe, and a cooler is fixedly installed on the second pressure-leading pipe on the upper side of the second pressure-leading branch pipe.

7. The steam-heated instrument insulation box suitable for high-cold areas according to claim 3 is characterized in that The box body includes an outer insulation layer and an inner insulation layer. The outer insulation layer is arranged on the outer side of the box body, and the inner insulation layer is arranged on the inner side of the box body. The outer insulation layer is an asbestos cement shell made of a mixture of asbestos fiber and cement, and the inner insulation layer is a composite silicate felt. A cooler is fixedly installed on the first pressure-leading pipe on the upper side of the first pressure-leading branch pipe, and a cooler is fixedly installed on the second pressure-leading pipe on the upper side of the second pressure-leading branch pipe.

8. The steam-heated instrument insulation box suitable for high-cold areas according to claim 4 is characterized in that The box body includes an outer insulation layer and an inner insulation layer. The outer insulation layer is arranged on the outer side of the box body, and the inner insulation layer is arranged on the inner side of the box body. The outer insulation layer is an asbestos cement shell made of a mixture of asbestos fiber and cement, and the inner insulation layer is a composite silicate felt. A cooler is fixedly installed on the first pressure-leading pipe on the upper side of the first pressure-leading branch pipe, and a cooler is fixedly installed on the second pressure-leading pipe on the upper side of the second pressure-leading branch pipe.

9. The steam-heated instrument insulation box suitable for high-cold areas according to claim 1, 2, 5, 7 or 8, characterized in that The first pressure-inducing pipe and the second pressure-inducing pipe on the outer side of the lower part of the box body are both fixedly installed with sewage valves. The front side of the box body is provided with a cabinet door, and a door lock is fixedly installed on the cabinet door.

10. The steam-heated instrument insulation box suitable for high-cold areas according to claim 6 is characterized in that The first pressure-inducing pipe and the second pressure-inducing pipe on the outer side of the lower part of the box body are both fixedly installed with sewage valves. The front side of the box body is provided with a cabinet door, and a door lock is fixedly installed on the cabinet door.

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