Methanol synthesis steam ejector
By using the pushing assembly to push the suction tube mouth in the steam injector of the methanol synthesis tower, the negative pressure of the steam ejected from the nozzle is fully utilized, which solves the problem of slow temperature rise of the methanol synthesis tower and improves efficiency.
Patent Information
- Application Number
- CN202421118607.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-05-22
AI Technical Summary
When the methanol synthesis tower started, the temperature was slower, and the negative pressure area of the existing steam injector was not fully utilized, resulting in low efficiency.
A methanol synthetic steam injector is designed, and a plurality of pushing components are used to rotate about the nozzle axis, pushing the gas or liquid at the suction tube opening to move along the inner wall of the suction chamber, so that the negative pressure of the steam ejected from the nozzle is fully utilized.
By fully utilizing the negative pressure area on the outer periphery of the nozzle, the heating efficiency of the methanol synthesis tower is improved.
Smart Images
Figure CN222668512U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical equipment, in particular to a methanol synthesis steam ejector. Background Art
[0002] When the methanol synthesis tower is started, it is necessary to use a steam ejector to start the operation and heat it up. The steam ejector includes a nozzle, an inhalation chamber, and an inhalation pipe. One end of the nozzle of the steam ejector is inserted into the inhalation chamber, and one end of the inhalation pipe is inserted into the inhalation chamber. The inhalation chamber is connected to the mixing chamber. When working, the steam forms a negative pressure in the inhalation chamber through the nozzle, sucking in the external gas or liquid at the inhalation pipe, and then the inhaled gas or liquid is mixed with the steam in the mixing chamber and discharged.
[0003] In practice, the methanol tower heats up slowly. Analysis shows that when the external gas or liquid at the suction pipe is sucked in by negative pressure, it is mainly concentrated on one side of the suction chamber, while the negative pressure area formed by the nozzle surrounds the outer periphery of the nozzle. As a result, only this part of the gas or liquid is transported to the end of the nozzle by negative pressure to participate in mixing. The part of the negative pressure area around the nozzle away from the suction pipe is not fully utilized, resulting in low efficiency. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a methanol synthesis steam ejector, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems in the prior art.
[0005] The utility model provides a methanol synthesis steam ejector, comprising:
[0006] A shell having a suction chamber, a throat pipe and a diffusion chamber which are connected in sequence;
[0007] A nozzle, one end of which penetrates into the suction chamber and is fixedly connected to the shell;
[0008] A suction pipe, one end of which is connected to the suction chamber, and the end of the suction pipe is opposite to the end of the nozzle located in the suction chamber;
[0009] A plurality of pushing components are arranged in the suction chamber and are rotatable around the axis of the nozzle, and are used to push the gas or liquid appearing from the end of the suction pipe to move along the inner wall of the suction chamber; and
[0010] The driving mechanism is used to drive the pushing component to rotate.
[0011] Preferably, the pushing assembly comprises:
[0012] A bracket is rotatably disposed in the suction chamber around the axis of the nozzle; and
[0013] The push plate is slidably arranged on the bracket and can slide close to or away from the inner wall of the suction chamber.
[0014] Preferably, the support comprises:
[0015] A support rod, on which strip holes are opened along its length direction;
[0016] Two mutually parallel first limiting rods are respectively connected to the two ends of the support rod, and the two first limiting rods are located on the same side of the support; and
[0017] Two second limiting rods are respectively connected to two ends of the support rod, the two second limiting rods are located on the same side of the support, and the second limiting rods are coaxial with the corresponding first limiting rods;
[0018] The push plate is slidably arranged in the strip hole; two first rings and two second rings are respectively connected to the four corners of the push plate; the two first rings are respectively slidably arranged on the corresponding first limiting rods; the first rings can slide and abut against the support rod; the two second rings are respectively slidably arranged on the corresponding second limiting rods; the second rings can slide and abut against the support rod.
[0019] Preferably, a driving hole is provided on the housing, and the driving mechanism comprises:
[0020] A gear ring, rotatably disposed in the suction chamber, coaxial with the nozzle, and connected to the plurality of support rods;
[0021] A gear rotatably disposed in the suction chamber and meshing with the ring gear; and
[0022] The motor is connected to the outer wall of the shell, and the output end thereof passes through the driving hole and is connected to the gear.
[0023] Preferably, the length direction of the push plate is inclined relative to the axial direction of the nozzle.
[0024] Preferably, the suction chamber is conical.
[0025] Compared with the prior art, the utility model has the following beneficial effects:
[0026] In the utility model, the pushing component of the device pushes the gas and liquid at the mouth of the suction pipe to move along the inner wall of the suction chamber, so that the negative pressure formed by the steam ejected from the nozzle at its periphery is fully utilized, thereby improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.
[0028] Figure 1 This is a three-dimensional diagram of a methanol synthesis steam ejector in one embodiment of the utility model;
[0029] Figure 2 for Figure 1 Internal schematic diagram of
[0030] Figure 3 for Figure 2 A magnified image of point A;
[0031] Figure 4 for Figure 3 A perspective view of the push assembly.
[0032] Reference numerals:
[0033] 10. Shell; 11. Suction chamber; 12. Throat; 13. Diffuser chamber; 14. Driving hole;
[0034] 20. Nozzle;
[0035] 30. Suction pipe;
[0036] 40. Pushing assembly; 41. Bracket; 411. Support rod; 412. Strip hole; 413. First limiting rod;
[0037] 414, second limiting rod; 42, push plate; 421, first ring; 422, second ring;
[0038] 50. Driving mechanism; 51. Ring gear; 52. Gear; 53. Motor. DETAILED DESCRIPTION
[0039] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.
[0040] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.
[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0042] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.
[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0044] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0045] See also Figures 1 to 4 This embodiment provides a methanol synthesis steam ejector, including a shell 10, a nozzle 20, a suction pipe 30, a plurality of pushing components 40 and a driving mechanism 50.
[0046] The housing 10 has a suction chamber 11, a throat pipe 12 and a diffusion chamber 13 which are connected in sequence.
[0047] One end of the nozzle 20 ( Figure 2The right end of the suction pipe 30 is inserted into the suction chamber 11 and is fixedly connected to the housing 10. Figure 2 The upper end of the suction pipe 30 is connected to the lower part of the suction chamber 11, and the end of the suction pipe 30 is opposite to the end of the nozzle 20 located in the suction chamber 11. The throat 12 and the diffusion chamber 13 are set with reference to the prior art.
[0048] The plurality of push assemblies 40 are all rotatably arranged in the suction chamber 11 around the axis of the nozzle 20. The push plate 42 is gradually used to push the gas or liquid appearing at the end of the suction pipe 30 to move along the inner wall of the suction chamber 11. The driving mechanism 50 is used to drive the push assemblies 40 to rotate.
[0049] In the present embodiment, the nozzle 20 forms a negative pressure in the suction chamber 11, thereby sucking out liquid or gas from the upper end of the suction pipe 30. Under the drive of the driving mechanism 50, the push assembly 40 rotates around the axis of the nozzle 20, and each push assembly 40 pushes the gas or liquid at the place in a push-scraping manner when passing through the mouth of the suction pipe 30, and moves along the inner wall of the suction chamber 11 to the upper part of the suction chamber 11. After the gas or liquid at the nozzle 20 is pushed away, under negative pressure, more gas or liquid is sucked out from the mouth of the suction pipe 30. The negative pressure formed at the end of the nozzle 20 has the same suction force on its periphery, and the gas and liquid pushed and scraped to the upper part of the suction chamber 11 will also be sucked to the front of the nozzle 20 by the negative pressure and mixed with the steam ejected from the nozzle 20. The push assembly 40 of the present device pushes the gas and liquid at the mouth of the suction pipe 30 to move along the inner wall of the suction chamber, so that the negative pressure formed by the nozzle 20 ejecting steam at its periphery is fully utilized, thereby improving efficiency.
[0050] In one embodiment, the pushing assembly 40 includes a bracket 41 and a pushing plate 42 .
[0051] The support 41 is rotatably disposed in the suction chamber 11 around the axis of the nozzle 20. The push plate 42 is slidably disposed on the support 41, and the push plate 42 can slide close to or away from the inner wall of the suction chamber 11.
[0052] In this embodiment, when the push plate 42 is located in the lower part of the suction chamber 11, under the action of gravity, the push plate 42 is close to the lower inner wall of the suction chamber 11, and the distance between the push plate 42 and the inner wall of the suction chamber 11 is small. At this time, the push plate 42 passes through the upper end of the suction pipe 30 and pushes the gas or liquid there to move along the inner wall of the suction chamber 11. Starting from the time when the push plate 42 passes the end of the suction pipe 30, after the push plate 42 rotates 90 degrees around the axis of the nozzle 20, under the action of gravity, the push plate 42 slowly slides away from the inner wall of the suction chamber 11, and the distance between the push plate 42 and the inner wall of the suction chamber 11 increases, and the pushed liquid or gas gradually detaches from the push plate 42 from the gap between the push plate 42 and the inner wall of the suction chamber 11, so that the gas and liquid pushed by the push plate 42 will not be pushed back to the pipe mouth of the suction pipe 30 again after being transported to the upper part of the suction chamber 11, and the negative pressure area formed by the nozzle 20 at its periphery is fully utilized.
[0053] In one embodiment, the bracket 41 includes a support rod 411 , two first limiting rods 413 and two second limiting rods 414 which are parallel to each other.
[0054] The support rod 411 is provided with a strip hole 412 along its length. Two mutually parallel first limit rods 413 are respectively connected to the two ends of the support rod 411, and the two first limit rods 413 are located on the same side of the support. Two second limit rods 414 are respectively connected to the two ends of the support rod 411, and the two second limit rods 414 are located on the same side of the support, and the second limit rods 414 are coaxial with the corresponding first limit rods 413.
[0055] The push plate 42 is slidably arranged in the strip hole 412; the four corners of the push plate 42 are respectively connected with two first rings 421 and two second rings 422; the two first rings 421 are respectively slidably arranged on the corresponding first limiting rods 413; the first rings 421 can slide and abut against the support rod 411; the two second rings 422 are respectively slidably arranged on the corresponding second limiting rods 414; the second rings 422 can slide and abut against the support rod 411.
[0056] In this embodiment, the push plate 42 slides in the strip hole 412 , and the first ring 421 and the second ring 422 can prevent the push plate 42 from being separated from the support rod 411 .
[0057] In one embodiment, a driving hole 14 is opened in the housing 10 , and the driving mechanism 50 includes a ring gear 51 , a gear 52 and a motor 53 .
[0058] The gear ring 51 is rotatably disposed in the suction chamber 11, the gear ring 51 is coaxial with the nozzle 20, and one side of the gear ring 51 is connected to a plurality of support rods 411. Specifically, an annular groove is disposed on the inner wall of the gear ring 51, and an annular mounting ring is connected to the inner wall of the suction chamber 11, and the outer wall of the mounting ring is slidably matched with the groove. The gear 52 is rotatably disposed in the suction chamber 11, and the gear 52 is meshed with the gear ring 51. The motor 53 is connected to the outer wall of the housing 10, and the output end of the motor 53 is connected to the gear 52 after passing through the drive hole 14.
[0059] In one embodiment, the length direction of the push plate 42 is inclined relative to the axial direction of the nozzle 20 .
[0060] In this embodiment, Figure 2 The push plate 42 is tilted, and when the push plate 42 rotates clockwise around the nozzle 20, the push plate 42 can also guide the gas or liquid it pushes, and throw the gas or liquid toward the end of the nozzle 20, so that more gas or liquid is mixed with the steam ejected from the nozzle 20, thereby improving efficiency. In addition, the thrown gas or liquid has a certain kinetic energy, which can increase the degree of mixing with the steam.
[0061] In one embodiment, the suction chamber is conical, and the shape of the end of the push plate 42 close to the suction chamber is adapted to the inner wall of the suction chamber. The suction chamber acts as a mixing chamber: the gas or liquid at the mouth of the suction pipe 30 is sucked by the negative pressure at the end of the nozzle 20 and moves along the inner wall of the suction chamber, and is concentrated at the end of the nozzle 20 and mixed with it. In addition, when the push plate 42 rotates to throw out the gas or liquid, the inner wall of the suction chamber has a guiding effect, and the gas or liquid is quickly concentrated at the end of the nozzle 20 along the inner wall of the suction chamber, thereby improving efficiency.
[0062] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.
[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.
Claims
1. A methanol synthesis steam ejector, characterized in that: include: A housing (10) having a suction chamber (11), a throat pipe (12) and a diffusion chamber (13) which are connected in sequence; A nozzle (20), one end of which penetrates into the suction chamber (11) and is fixedly connected to the housing (10); A suction pipe (30), one end of which is in communication with the suction chamber (11), and an end of the suction pipe (30) is opposite to an end of the nozzle (20) located in the suction chamber (11); A plurality of pushing components (40), each of which is rotatably disposed in the suction chamber (11) around the axis of the nozzle (20), and is used to push the gas or liquid appearing at the end of the suction pipe (30) to move along the inner wall of the suction chamber (11); and The driving mechanism (50) is used to drive the pushing assembly (40) to rotate.
2. A methanol synthesis steam ejector as claimed in claim 1, characterized in that: The pushing assembly (40) comprises: a bracket (41) rotatably disposed in the suction chamber (11) about the axis of the nozzle (20); and The push plate (42) is slidably disposed on the bracket (41) and can slide toward or away from the inner wall of the suction chamber (11).
3. A methanol synthesis steam ejector as claimed in claim 2, characterized in that: The support (41) comprises: A support rod (411) having a strip-shaped hole (412) formed thereon along its length direction; Two mutually parallel first limiting rods (413) are respectively connected to the two ends of the support rod (411), and the two first limiting rods (413) are located on the same side of the support; and Two second limiting rods (414) are respectively connected to two ends of the support rod (411), the two second limiting rods (414) are located on the same side of the support, and the second limiting rod (414) is coaxial with the corresponding first limiting rod (413); The push plate (42) is slidably arranged in the strip-shaped hole (412); the four corners of the push plate (42) are respectively connected with two first rings (421) and two second rings (422); the two first rings (421) are respectively slidably arranged on the corresponding first limiting rods (413); the first rings (421) can slide to abut against the support rod (411); the two second rings (422) are respectively slidably arranged on the corresponding second limiting rods (414); the second rings (422) can slide to abut against the support rod (411).
4. A methanol synthesis steam ejector as claimed in claim 3, characterized in that: The housing (10) is provided with a driving hole (14), and the driving mechanism (50) comprises: a gear ring (51) rotatably disposed in the suction chamber (11), coaxial with the nozzle (20), and connected to the plurality of support rods (411); a gear (52) rotatably disposed in the suction chamber (11) and meshing with the ring gear (51); and The motor (53) is connected to the outer wall of the housing (10), and its output end passes through the driving hole (14) and is connected to the gear (52).
5. A methanol synthesis steam ejector as claimed in claim 3 or 4, characterized in that: The length direction of the push plate (42) is arranged to be inclined relative to the axial direction of the nozzle (20).
6. A methanol synthesis steam ejector as claimed in claim 5, characterized in that: The suction chamber (11) is conical.