Low-temperature-resistant explosion-proof protective cover for LNG (Liquefied Natural Gas) detection transmitter

Abstract

The utility model relates to the technical field of LNG (liquefied natural gas) detection, and discloses a low-temperature-resistant explosion-proof protective cover for an LNG detection transmitter, which comprises a base, a transmitter main body is arranged at the top of the base, a protective mechanism is arranged on the outer side of the transmitter main body, and a locking assembly is arranged on the outer side of the protective mechanism. The protection mechanism comprises a mounting assembly, a connecting assembly and a protection assembly, the mounting assembly is arranged at the bottom of the transmitter main body, the connecting assembly is arranged in the mounting assembly, and the protection assembly is arranged at the top of the mounting assembly. According to the low-temperature-resistant explosion-proof protection cover for the LNG detection transmitter, the protection mechanism, the fixing ring and the clamping strip are arranged to be connected to the outer side of the base in a matched and sleeving mode to position the transmitter body, a worker only needs to rotate a bolt to fix the base and a positioning screw cylinder, the worker can rapidly complete disassembly and assembly treatment on the transmitter body, and the practicability is high. Operation is easy, and use by workers is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to LNG detection technical field, concretely is a LNG detection transmitter is with low temperature explosion -proof protection cover. BACKGROUND

[0002] The 21st century is the era of natural gas. At present, the proportion of natural gas in the energy composition is increasing, and has become the third largest energy after coal and oil in the world, and gradually becomes the main alternative energy of coal. The sustainable and high-speed development of China's economy requires to speed up the pace of transformation from traditional energy economy to clean energy economy, and developing LNG industry is an important part of clean energy strategy. Advanced and perfect automation equipment in the liquefied natural gas industry plays a vital role, and the selection and installation of the instrument applied in the LNG system and under the cryogenic condition (-170 DEG C) are widely valued.

[0003] Because the measured medium is liquid natural gas, the operating temperature is -170 DEG C, and the split type on-line pressure measurement method is used for measurement, therefore, in order to save the cost, the pressure transmitter is used to measure the pressure of the low temperature medium in the LNG plant.

[0004] For on-line pressure measurement of low temperature medium, in order to protect the transmitter from being damaged due to too low temperature, the transmitter must be measured after being gasified. When the LNG is gasified, the volume ratio is 1:600, and a huge pressure is generated instantaneously, so a protection structure capable of coping with low temperature and high pressure is needed to be designed for the transmitter, so as to protect the normal use of the transmitter. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a LNG detection transmitter is with low temperature explosion -proof protection cover to solve the problems in the prior art.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a LNG detection transmitter is with low temperature explosion -proof protection cover, including base, the base top is provided with transmitter main body, the transmitter main body outside is provided with protection mechanism, the protection mechanism outside is provided with fixed mechanism.

[0007] The protection mechanism includes mounting assembly, connecting assembly and protection assembly, the mounting assembly is arranged at the bottom of the transmitter main body, the connecting assembly is arranged in the mounting assembly, and the protection assembly is arranged at the top of the mounting assembly.

[0008] The fixed mechanism includes positioning assembly and locking assembly, the positioning assembly is arranged outside the mounting assembly, and the locking assembly is arranged outside the positioning assembly.

[0009] Preferably, the mounting assembly comprises a fixing ring fixedly connected to the top of the base, a base sleeved on the inner ring of the fixing ring, the base being fixedly connected to the bottom of the transmitter main body, a clamping strip clamped on the outer ring of the base, and the clamping strip being fixedly connected to the inner ring of the fixing ring.

[0010] Preferably, the connecting assembly comprises a positioning screw fixedly connected to the top of the base and located at the position of the inner ring of the fixing ring, the positioning screw being clamped in the base, an embedding ring arranged above the positioning screw, the embedding ring being clamped in the top of the base, a clamping block clamped in the embedding ring, a bolt sleeved on the inner ring of the embedding ring, and the bolt being threadedly connected to the inner ring of the positioning screw.

[0011] Preferably, the protection assembly comprises a sleeve ring clamped on the top of the fixing ring, a hollow protection cover fixedly connected to the top of the sleeve ring, and the hollow protection cover being sleeved on the outer side of the transmitter main body.

[0012] Preferably, the positioning assembly comprises a fixing sleeve fixedly connected to the outer ring of the fixing ring, the fixing sleeve being fixedly connected to the top of the base, an embedding plate clamped in the top of the fixing sleeve, a clamping plate fixedly connected to the bottom of the embedding plate, the clamping plate being clamped in the fixing sleeve, a connecting frame fixedly connected to the top of the embedding plate, and the connecting frame being fixedly connected to the outer ring of the sleeve ring.

[0013] Preferably, the locking assembly comprises a fixing box fixedly connected to the outer side of the fixing sleeve, a sliding cylinder slidingly connected in the fixing box, a compression spring fixedly connected to the outer side of the sliding cylinder, a clamping rod fixedly connected to the inner side of the sliding cylinder, the clamping rod being clamped in the fixing sleeve and the clamping plate, a push rod fixedly connected to the top of the sliding cylinder, and the push rod being slidingly connected in the top of the fixing box.

[0014] Compared with the prior art, the LNG detection transmitter anti-low-temperature explosion-proof protection cover has the following beneficial effects:

[0015] 1. The LNG detection transmitter anti-low-temperature explosion-proof protection cover, through the cooperation of the fixing ring and the clamping strip sleeved on the outer side of the base for positioning the transmitter main body, the fixing between the base and the positioning screw can be completed by only rotating the bolt, so that the disassembly and assembly of the transmitter main body can be quickly completed by the worker, the operation is simple and convenient for the worker to use, the hollow protection cover is hollow, the temperature on the inner and outer sides of the hollow protection cover is isolated by the inert gas arranged inside, the transmitter main body in the hollow protection cover is not affected by the low temperature of the environment when the natural gas changes from liquid state to gaseous state, and the normal use of the transmitter main body is ensured.

[0016] 2. The LNG detection transmitter is with low temperature explosion -proof protection cover, through the fixed mechanism that sets up, sliding tube is under the action of compression spring and drives the clamping rod to move inwards and is connected in the fixed sleeve and the positioning of the clamping plate, so that the hollow protection cover and the ring can be fixed on the top of the fixed ring and protect the transmitter main body, at the same time, the staff only needs to move the lever outward to release the positioning between the fixed sleeve and the clamping plate, which is convenient for the staff to disassemble the hollow protection cover, and the operation is simple and convenient for the staff to use. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed in the embodiment description will be simply introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor:

[0018] Figure 1 It is the front view of the utility model;

[0019] Figure 2 It is the partial structure explosion drawing of the utility model;

[0020] Figure 3 It is the side sectional view of the utility model;

[0021] Figure 4 It is the partial structure schematic view of the utility model;

[0022] Figure 5 It is the partial structure sectional view of the fixed mechanism.

[0023] In the drawing: 1, protection mechanism;11, installation assembly;1101, fixed ring;1102, base;1103, clamping strip;12, connecting assembly;1201, positioning screw cylinder;1202, embedded ring;1203, clamping block;1204, bolt;13, protection assembly;1301, ring;1302, hollow protection cover;2, fixed mechanism;21, positioning assembly;2101, fixed sleeve;2102, embedded plate;2103, clamping plate;2104, connecting frame;22, locking assembly;2201, fixed box;2202, sliding cylinder;2203, compression spring;2204, clamping rod;2205, lever;3, base;4, transmitter main body. DETAILED DESCRIPTION

[0024] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0025] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements or the interaction relationship of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] The present application provides a technical scheme: Embodiment

[0027] In combination Figures 1 to 5 A kind of LNG detection transmitter is used to low temperature explosion-proof protective cover of anti, including base 3, base 3 top is provided with transmitter main body 4, transmitter main body 4 outer side is provided with protection mechanism 1, protection mechanism 1 outer side is provided with fixed mechanism 2.

[0028] Protection mechanism 1 includes mounting assembly 11, connecting assembly 12 and protection assembly 13, mounting assembly 11 is set to the bottom of transmitter main body 4, connecting assembly 12 is set to mounting assembly 11, protection assembly 13 is set to the top of mounting assembly 11.

[0029] The mounting assembly 11 comprises a fixing ring 1101 fixedly connected to the top of the base 3, a base 1102 sleeved on the inner ring of the fixing ring 1101, the base 1102 being fixedly connected to the bottom of the transmitter main body 4, a clamping strip 1103 clamped on the outer ring of the base 1102, the clamping strip 1103 being fixedly connected to the inner ring of the fixing ring 1101, the connecting assembly 12 comprises a positioning screw cylinder 1201 fixedly connected to the top of the base 3 at the position of the inner ring of the fixing ring 1101, the positioning screw cylinder 1201 being clamped in the base 1102, an embedded ring 1202 arranged above the positioning screw cylinder 1201, the embedded ring 1202 being clamped in the top of the base 1102, a clamping block 1203 clamped in the embedded ring 1202, a bolt 1204 sleeved on the inner ring of the embedded ring 1202, the bolt 1204 being threadedly connected to the inner ring of the positioning screw cylinder 1201, and the protection assembly 13 comprises a sleeve ring 1301 clamped on the top of the fixing ring 1101, a hollow protective cover 1302 fixedly connected to the top of the sleeve ring 1301, the hollow protective cover 1302 being sleeved on the outer side of the transmitter main body 4.

[0030] Further, the fixing ring 1101 and the clamping strip 1103 are sleeved on the outer side of the base 1102 to position the transmitter main body 4, the worker only needs to rotate the bolt 1204 to fix the base 1102 and the positioning screw cylinder 1201, so that the worker can quickly complete the disassembly and assembly of the transmitter main body 4, the operation is simple and convenient for the worker to use, meanwhile, the hollow protective cover 1302 is hollow, the hollow protective cover 1302 is used to protect the inner transmitter main body 4, and the temperature on the inner and outer sides of the hollow protective cover 1302 is isolated by the inert gas arranged inside, so that the transmitter main body 4 in the hollow protective cover 1302 is not affected by the low temperature of the environment when the natural gas is converted from liquid state to gaseous state, and the normal use of the transmitter main body 4 is ensured. Embodiment

[0031] Reference Figures 1 to 5 On the basis of Embodiment One, it is further obtained that the fixing mechanism 2 comprises a positioning assembly 21 and a locking assembly 22, the positioning assembly 21 being arranged on the outer ring of the mounting assembly 11, and the locking assembly 22 being arranged on the outer side of the positioning assembly 21.

[0032] The positioning assembly 21 comprises a fixed sleeve 2101 fixedly connected to the outer circle of the fixed ring 1101, the fixed sleeve 2101 is fixedly connected to the top of the base 3, the top of the fixed sleeve 2101 is clamped with a panel 2102, the bottom of the panel 2102 is fixedly connected with a clamping plate 2103, the clamping plate 2103 is clamped in the fixed sleeve 2101, the top of the panel 2102 is fixedly connected with a connecting frame 2104, the connecting frame 2104 is fixedly connected to the outer circle of the sleeve ring 1301, the locking assembly 22 comprises a fixed box 2201 fixedly connected to the outer side of the fixed sleeve 2101, the fixed box 2201 is slidingly connected with a sliding cylinder 2202, the outer side of the sliding cylinder 2202 is fixedly connected with a compression spring 2203, the inner side of the sliding cylinder 2202 is fixedly connected with a clamping rod 2204, the clamping rod 2204 is clamped in the fixed sleeve 2101 and the clamping plate 2103, the top of the sliding cylinder 2202 is fixedly connected with a push rod 2205, the push rod 2205 is slidingly connected to the top of the fixed box 2201.

[0033] Further, the sliding cylinder 2202 drives the clamping rod 2204 to move inwardly to be clamped in the fixed sleeve 2101 and the clamping plate 2103 under the action of the compression spring 2203, so that the hollow protective cover 1302 and the sleeve ring 1301 can be fixed to the top of the fixed ring 1101 to protect the transmitter main body 4, and meanwhile the staff only needs to push the push rod 2205 outwardly to release the positioning between the fixed sleeve 2101 and the clamping plate 2103, so as to facilitate the staff to disassemble and assemble the hollow protective cover 1302, which is simple in operation and convenient for the staff to use.

[0034] In actual operation, when the device is used, when the transmitter main body 4 needs to be installed, the staff first places the base 1102 above the fixed ring 1101, then the staff rotates the base 1102 relative to the positioning screw cylinder 1201 to align them, then the staff moves the base 1102 downwardly to be clamped in the fixed ring 1101, at this time, the bottom of the base 1102 is attached to the top of the base 3, and the positioning screw cylinder 1201 is clamped in the base 1102, then the staff clamps the clamping ring 1202 in the top of the base 1102, so that the clamping block 1203 is clamped in the clamping ring 1202, finally the staff sleeves the bolt 1204 in the outer circle of the clamping ring 1202 to contact the positioning screw cylinder 1201 and then rotates, the bolt 1204 rotates in the outer circle of the positioning screw cylinder 1201 to move downwardly, and the device cannot move downwardly any more, at this time, the installation of the transmitter main body 4 is completed;

[0035] When installing the hollow protective cover 1302, the operator first pulls the levers 2205 around the perimeter outwards. The outward movement of the levers 2205, via the slide cylinder 2202, causes the locking lever 2204 to move outwards and retract into the fixed housing 2201. Then, the operator places the hollow protective cover 1302 above the transmitter body 4, and rotates the hollow protective cover 1302 to align the fixing sleeve 2101 with the locking plate 2103. Finally, the operator moves the hollow protective cover 1302 downwards, causing the collar 130... 1. The clip is engaged with the top of the fixing ring 1101. At this time, the clip plate 2103 and the insert plate 2102 are engaged with the top of the fixing sleeve 2101. Finally, the operator releases the positioning of the surrounding levers 2205. At this time, the surrounding slide cylinders 2202 drive the clip rods 2204 to move inward under the action of the compression springs 2203. The clip rods 2204 move inward and engage with the fixing sleeve 2101 and the clip plate 2103. At this time, the positioning of the hollow protective cover 1302 is completed, and the installation of the hollow protective cover 1302 is completed.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A cryogenic explosion-proof protective cover for an LNG detection transmitter, comprising a base (3), characterized in that: The base (3) is provided with a transmitter body (4) on top, and a protective mechanism (1) is provided on the outside of the transmitter body (4), and a fixing mechanism (2) is provided on the outside of the protective mechanism (1). The protective mechanism (1) includes a mounting component (11), a connecting component (12), and a protective component (13). The mounting component (11) is located at the bottom of the transmitter body (4), the connecting component (12) is located inside the mounting component (11), and the protective component (13) is located at the top of the mounting component (11). The fixing mechanism (2) includes a positioning component (21) and a locking component (22). The positioning component (21) is disposed on the outer ring of the mounting component (11), and the locking component (22) is disposed on the outside of the positioning component (21).

2. The cryogenic explosion-proof protective cover for an LNG detection transmitter according to claim 1, characterized in that: The mounting assembly (11) includes a retaining ring (1101), which is fixedly connected to the top of the base (3). The inner ring of the retaining ring (1101) is fitted with a base (1102), which is fixedly connected to the bottom of the transmitter body (4). The outer ring of the base (1102) is fitted with a retaining strip (1103), which is fixedly connected to the inner ring of the retaining ring (1101).

3. The cryogenic explosion-proof protective cover for an LNG detection transmitter according to claim 1, characterized in that: The connecting assembly (12) includes a positioning screw cylinder (1201), which is fixedly connected to the top of the base (3) at the inner ring position of the fixing ring (1101). The positioning screw cylinder (1201) is snapped into the base (1102). An insert ring (1202) is provided above the positioning screw cylinder (1201). The insert ring (1202) is snapped into the top of the base (1102). A locking block (1203) is snapped into the insert ring (1202). A bolt (1204) is sleeved on the inner ring of the insert ring (1202). The bolt (1204) is threadedly connected to the inner ring of the positioning screw cylinder (1201).

4. The cryogenic explosion-proof protective cover for an LNG detection transmitter according to claim 1, characterized in that: The protective component (13) includes a collar (1301), which is snapped onto the top of a fixed ring (1101). A hollow protective cover (1302) is fixedly connected to the top of the collar (1301), and the hollow protective cover (1302) is sleeved on the outside of the transmitter body (4).

5. A cryogenic explosion-proof protective cover for an LNG detection transmitter according to claim 1, characterized in that: The positioning component (21) includes a fixing sleeve (2101), which is fixedly connected to the outer ring of the fixing ring (1101) and fixedly connected to the top of the base (3). A panel (2102) is snapped into the top of the fixing sleeve (2101).

6. A cryogenic explosion-proof protective cover for an LNG detection transmitter according to claim 5, characterized in that: The bottom of the panel (2102) is fixedly connected to a card plate (2103), which is snapped into the fixed sleeve (2101). The top of the panel (2102) is fixedly connected to a connecting frame (2104), which is fixedly connected to the outer ring of the collar (1301).

7. A cryogenic explosion-proof protective cover for an LNG detection transmitter according to claim 1, characterized in that: The locking assembly (22) includes a fixed box (2201), which is fixedly connected to the outside of the fixed sleeve (2101). A slide cylinder (2202) is slidably connected inside the fixed box (2201). A compression spring (2203) is fixedly connected to the outside of the slide cylinder (2202), and a locking rod (2204) is fixedly connected to the inside of the slide cylinder (2202).

8. A cryogenic explosion-proof protective cover for an LNG detection transmitter according to claim 7, characterized in that: The lever (2204) is engaged in the fixed sleeve (2101) and the plate (2103), and the top of the slide cylinder (2202) is fixedly connected to the lever (2205), which is slidably connected to the top of the fixed box (2201).

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